diff --git a/README.md b/README.md
index 7e2bfcf..83d2167 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,7 @@
 Liste des signes, symptômes et maladies :
 
-https://wikimedi.ca/wiki/Concept:Signes_et_sympt%C3%B4mes
+<https://wikimedi.ca/wiki/Concept:Signes_et_sympt%C3%B4mes>
 
 Export RDF :
 
-https://wikimedi.ca/wiki/Sp%C3%A9cial:Export_RDF/<NOM_DE_LA_PAGE>
-
-Visu :
-
-* https://js.cytoscape.org/
-* https://www.npmjs.com/package/react-graph-vis
-* http://sigmajs.org/
-* http://getspringy.com/
-* https://github.com/danielcaldas/react-d3-graph
+<https://wikimedi.ca/wiki/Sp%C3%A9cial:Export_RDF/NOM_DE_LA_PAGE>
diff --git a/app/App.js b/app/App.js
index 2fe009d..0521762 100644
--- a/app/App.js
+++ b/app/App.js
@@ -1,5 +1,17 @@
-import React from 'react';
+import React, {useState} from 'react';
+import TermInput from './TermInput.js';
+import ResultsGraph from './ResultsGraph.js';
 
-const App = () => <div>Je suis rechargé !</div>;
+const App = () =>
+{
+    const [terms, setTerms] = useState([]);
+
+    return (
+        <div className="App">
+            <TermInput terms={terms} setTerms={setTerms} />
+            <ResultsGraph />
+        </div>
+    );
+};
 
 export default App;
diff --git a/app/Graph.js b/app/Graph.js
new file mode 100644
index 0000000..2c55ece
--- /dev/null
+++ b/app/Graph.js
@@ -0,0 +1,219 @@
+import React, {useState, useRef, useEffect} from 'react';
+import Springy from 'springy';
+
+/**
+ * Crée un identifiant unique pour l’arête identifiée par ses deux extrémités.
+ *
+ * @param from Premier nœud de l’arête.
+ * @param to Second nœud de l’arête.
+ * @return Identifiant unique pour les deux directions de l’arête.
+ */
+const getEdgeId = (from, to) =>
+{
+    if (to < from)
+    {
+        return getEdgeId(to, from);
+    }
+
+    return `${from}-${to}`;
+};
+
+/**
+ * Vérifie si une liste d’arêtes contient une arête donnée, dans un sens ou
+ * dans l’autre.
+ *
+ * @param list Liste d’arêtes.
+ * @param from Premier nœud de l’arête.
+ * @param to Second nœud de l’arête.
+ * @return Vrai si et seulement si l’arête existe.
+ */
+const includesEdge = (list, from, to) =>
+    list.some(([source, target]) => (
+        (source === from && target === to)
+        || (source === to && target === from)
+    ));
+
+/**
+ * Affiche un graphe.
+ *
+ * @prop nodes Liste des identifiants de nœuds du graphe. Chaque nœud doit
+ * avoir un identifiant unique ne contenant pas de tiret ('-').
+ * @prop edges Couples d’identifiants de nœuds formant les arêtes du graphe.
+ * @prop render Fonction de rendu prenant en paramètre l’identifiant d’un nœud
+ * du graphe et renvoyant un élément à afficher pour le représenter.
+ */
+const Graph = ({nodes, edges, render}) =>
+{
+    const [graph,] = useState(new Springy.Graph());
+    const [layout,] = useState(new Springy.Layout.ForceDirected(
+        graph,
+        /* rigidité = */ 400,
+        /* répulsion = */ 400,
+        /* amortissement = */ 0.5
+    ));
+
+    // N’arrête jamais l’animation
+    layout.minEnergyThreshold = 0;
+
+    const graphParent = useRef(null);
+
+    // Ajout des nouveaux nœuds
+    for (let node of nodes)
+    {
+        if (!(node in graph.nodeSet))
+        {
+            console.info(`Ajout du nouveau nœud ${node}`);
+            graph.addNode(new Springy.Node(node));
+        }
+    }
+
+    // Retrait des anciens nœuds et de leurs arêtes adjacentes
+    graph.filterNodes(node =>
+    {
+        if (!nodes.includes(node.id))
+        {
+            console.info(`Retrait de l’ancien nœud ${node.id}`);
+            return false;
+        }
+
+        return true;
+    });
+
+    // Ajout des nouvelles arêtes
+    for (let [from, to] of edges)
+    {
+        const edgeId = getEdgeId(from, to);
+
+        if (graph.edges.every(edge => edge.id !== edgeId))
+        {
+            console.info(`Ajout de la nouvelle arête ${edgeId}`);
+            graph.addEdge(new Springy.Edge(edgeId, {id: from}, {id: to}));
+        }
+    }
+
+    // Retrait des anciennes arêtes
+    graph.filterEdges(({source: {id: from}, target: {id: to}}) =>
+    {
+        if (!includesEdge(edges, from, to))
+        {
+            console.info(`Retrait de l’ancienne arête ${from}-${to}`);
+            return false;
+        }
+
+        return true;
+    });
+
+    useEffect(() =>
+    {
+        const center = () => new Springy.Vector(
+            window.innerWidth / 2,
+            window.innerHeight / 2
+        );
+
+        const scale = 50;
+        const coordsToScreen = vec => vec.multiply(scale).add(center());
+        const screenToCoords = vec => vec.subtract(center()).divide(scale);
+
+        layout.start(() =>
+        {
+            layout.eachNode(({id}, {p}) =>
+            {
+                const element = graphParent.current.querySelector(
+                    `[data-node-id="${id.replace('"', '\\"')}"]`
+                );
+
+                const {x, y} = coordsToScreen(p);
+
+                element.style.transform = `translate(
+                    calc(${x}px - 50%),
+                    calc(${y}px - 50%)
+                )`;
+            });
+
+            layout.eachEdge(({id}, {point1: {p: p1}, point2: {p: p2}}) =>
+            {
+                const element = graphParent.current.querySelector(
+                    `[data-edge-id="${id}"]`
+                );
+
+                const {x: x1, y: y1} = coordsToScreen(p1);
+                const {x: x2, y: y2} = coordsToScreen(p2);
+
+                element.setAttribute('x1', x1);
+                element.setAttribute('y1', y1);
+                element.setAttribute('x2', x2);
+                element.setAttribute('y2', y2);
+            });
+        }, () => {
+            console.info(`Fin du rendu du graphe`);
+        }, () => {
+            console.info(`Démarrage du rendu du graphe`);
+        });
+
+        let dragging = null;
+
+        const mouseDown = ev =>
+        {
+            const {clientX: x, clientY: y} = ev;
+            const screen = new Springy.Vector(x, y);
+            const position = screenToCoords(screen);
+            const nearest = layout.nearest(position);
+
+            if (nearest.distance <= scale / 50)
+            {
+                dragging = nearest;
+                dragging.point.m = 1000;
+            }
+        };
+
+        const mouseMove = ev =>
+        {
+            if (dragging !== null)
+            {
+                const {clientX: x, clientY: y} = ev;
+                const screen = new Springy.Vector(x, y);
+                dragging.point.p = screenToCoords(screen);
+            }
+        };
+
+        const mouseUp = ev =>
+        {
+            if (dragging !== null)
+            {
+                dragging.point.m = 1;
+                dragging = null;
+            }
+        };
+
+        graphParent.current.addEventListener('mousedown', mouseDown);
+        document.body.addEventListener('mousemove', mouseMove);
+        document.body.addEventListener('mouseup', mouseUp);
+
+        return () =>
+        {
+            layout.stop();
+            graphParent.current.removeEventListener('mousedown', mouseDown);
+            document.body.removeEventListener('mousemove', mouseMove);
+            document.body.removeEventListener('mouseup', mouseUp);
+        };
+    });
+
+    return (
+        <div ref={graphParent} className="Graph">
+            <svg className="Graph_edgesContainer">
+                {edges.map(edge => (
+                    <line data-edge-id={getEdgeId(...edge)} />
+                ))}
+            </svg>
+
+            {nodes.map(id => (
+                <span
+                    className="Graph_node"
+                    data-node-id={id}
+                >{render(id)}</span>
+            ))}
+        </div>
+    );
+};
+
+export default Graph;
diff --git a/app/ResultsGraph.js b/app/ResultsGraph.js
new file mode 100644
index 0000000..3845d12
--- /dev/null
+++ b/app/ResultsGraph.js
@@ -0,0 +1,176 @@
+import React from 'react';
+import Graph from './Graph.js';
+
+// const config = {
+//     automaticRearrangeAfterDropNode: true,
+//     node: {
+//         color: 'lightgreen',
+//         size: 240,
+//         fontSize: 14,
+//         highlightStrokeColor: 'blue',
+//         labelProperty: 'name'
+//     },
+//     link: {
+//         highlightColor: 'lightblue'
+//     }
+// };
+
+const nodes = {
+    Q2840: {
+        id: 'Q2840',
+        name: 'Grippe',
+        types: ['Maladie'],
+        weight: 0.000035
+    },
+    Q154882: {
+        id: 'Q154882',
+        name: 'Légionellose',
+        types: ['Maladie'],
+        weight: 0.000015
+    },
+    Q155098: {
+        id: 'Q155098',
+        name: 'Leptospirose',
+        types: ['Maladie'],
+        weight: 0.00001
+    },
+    Q326663: {
+        id: 'Q326663',
+        name: 'Encéphalite à tiques',
+        types: ['Maladie'],
+        weight: 0.000001
+    },
+    Q133780: {
+        id: 'Q133780',
+        name: 'Peste',
+        types: ['Maladie'],
+        weight: 0.000032
+    },
+    Q38933: {
+        id: 'Q38933',
+        name: 'Fièvre',
+        types: ['Symptôme']
+    },
+    Q474959: {
+        id: 'Q474959',
+        name: 'Myalgie',
+        types: ['Symptôme']
+    },
+    Q86: {
+        id: 'Q86',
+        name: 'Céphalée',
+        types: ['Signe']
+    },
+    Q1115038: {
+        id: 'Q1115038',
+        name: 'Rhinorrhée',
+        types: ['Symptôme']
+    },
+    Q9690: {
+        id: 'Q9690',
+        name: 'Fatigue',
+        types: ['Symptôme']
+    },
+    Q127076: {
+        id: 'Q127076',
+        name: 'Vomissement',
+        types: ['Symptôme', 'Signe']
+    },
+    Q178061: {
+        id: 'Q178061',
+        name: 'Choc circulatoire',
+        types: ['Maladie'],
+        weight: 0.000038
+    },
+    Q35805: {
+        id: 'Q35805',
+        name: 'Toux',
+        types: ['Symptôme', 'Signe']
+    },
+    Q647099: {
+        id: 'Q647099',
+        name: 'Hémoptysie',
+        types: ['Symptôme']
+    },
+    Q653197: {
+        id: 'Q653197',
+        name: 'Rash',
+        types: ['Symptôme', 'Signe']
+    },
+    Q160796: {
+        id: 'Q160796',
+        name: 'Syndrome confusionnel',
+        types: ['Maladie'],
+        weight: 0.000004
+    },
+    Q186235: {
+        id: 'Q186235',
+        name: 'Myocardite',
+        types: ['Maladie'],
+        weight: 0.0000075
+    },
+    Q476921: {
+        id: 'Q476921',
+        name: 'Insuffisance rénale',
+        types: ['Maladie'],
+        weight: 0.0000046
+    },
+    Q281289: {
+        id: 'Q281289',
+        name: 'Photophobie',
+        types: ['Signe']
+    },
+    Q159557: {
+        id: 'Q159557',
+        name: 'Coma',
+        types: ['Signe']
+    }
+};
+
+const edges = [
+    ['Q2840', 'Q38933'],
+    ['Q2840', 'Q1115038'],
+    ['Q2840', 'Q474959'],
+    ['Q2840', 'Q86'],
+    ['Q2840', 'Q9690'],
+
+    ['Q154882', 'Q86'],
+    ['Q154882', 'Q38933'],
+    ['Q154882', 'Q35805'],
+    ['Q154882', 'Q474959'],
+
+    ['Q155098', 'Q38933'],
+    ['Q155098', 'Q474959'],
+    ['Q155098', 'Q86'],
+    ['Q155098', 'Q476921'],
+    ['Q155098', 'Q186235'],
+    ['Q155098', 'Q653197'],
+
+    ['Q326663', 'Q86'],
+    ['Q326663', 'Q474959'],
+    ['Q326663', 'Q38933'],
+    ['Q326663', 'Q9690'],
+    ['Q326663', 'Q281289'],
+    ['Q326663', 'Q159557'],
+    ['Q326663', 'Q127076'],
+
+    ['Q133780', 'Q38933'],
+    ['Q133780', 'Q86'],
+    ['Q133780', 'Q127076'],
+    ['Q133780', 'Q474959'],
+    ['Q133780', 'Q178061'],
+    ['Q133780', 'Q35805'],
+    ['Q133780', 'Q647099'],
+    ['Q133780', 'Q653197'],
+    ['Q133780', 'Q160796']
+];
+
+const ResultsGraph = () => (
+    <Graph
+        nodes={Object.keys(nodes)}
+        edges={edges}
+        render={id => nodes[id].name}
+    />
+);
+
+export default ResultsGraph;
diff --git a/app/TermInput.js b/app/TermInput.js
new file mode 100644
index 0000000..397667f
--- /dev/null
+++ b/app/TermInput.js
@@ -0,0 +1,53 @@
+import React, {useState} from 'react';
+
+const enterKey = 13;
+
+const TermInput = ({terms, setTerms}) =>
+{
+    const [value, setValue] = useState('');
+
+    const handleKeyDown = ev =>
+    {
+        if (ev.keyCode === enterKey)
+        {
+            ev.preventDefault();
+
+            if (!terms.includes(value))
+            {
+                setTerms(terms.concat([value]));
+            }
+
+            setValue('');
+        }
+    };
+
+    const handleChange = ev =>
+    {
+        setValue(ev.target.value);
+    };
+
+    const handleRemove = removedTerm =>
+    {
+        console.log(removedTerm);
+        console.log(terms);
+        setTerms(terms.filter(term => term !== removedTerm));
+    };
+
+    return (
+        <div className="TermInput">
+            {terms.map(term => 
+                <span
+                    className="TermInput_term"
+                    onClick={handleRemove.bind(null, term)}
+                >{term}</span>
+            )}
+            <input
+                autofocus="true" type="text" className="TermInput_input"
+                placeholder="Rechercher un symptôme, un signe ou une maladie…"
+                value={value}
+                onChange={handleChange} onKeyDown={handleKeyDown} />
+        </div>
+    );
+}
+
+export default TermInput;
diff --git a/app/index.html b/app/index.html
index 96f32de..a5720c5 100644
--- a/app/index.html
+++ b/app/index.html
@@ -2,7 +2,10 @@
 <html>
     <head>
         <meta charset="utf-8">
-        <title>Bonjour</title>
+        <title>Recherche de maladies par symptômes</title>
+
+        <link rel="stylesheet" href="style/font/SourceSansPro.css">
+        <link rel="stylesheet" href="style/style.css">
     </head>
     <body>
         <div id="root"></div>
diff --git a/app/style/font/SourceSansPro-It.woff b/app/style/font/SourceSansPro-It.woff
new file mode 100644
index 0000000..4d29fd6
Binary files /dev/null and b/app/style/font/SourceSansPro-It.woff differ
diff --git a/app/style/font/SourceSansPro-It.woff2 b/app/style/font/SourceSansPro-It.woff2
new file mode 100644
index 0000000..f71eee7
Binary files /dev/null and b/app/style/font/SourceSansPro-It.woff2 differ
diff --git a/app/style/font/SourceSansPro-Regular.woff b/app/style/font/SourceSansPro-Regular.woff
new file mode 100644
index 0000000..0027c8f
Binary files /dev/null and b/app/style/font/SourceSansPro-Regular.woff differ
diff --git a/app/style/font/SourceSansPro-Regular.woff2 b/app/style/font/SourceSansPro-Regular.woff2
new file mode 100644
index 0000000..2dee49f
Binary files /dev/null and b/app/style/font/SourceSansPro-Regular.woff2 differ
diff --git a/app/style/font/SourceSansPro-Semibold.woff b/app/style/font/SourceSansPro-Semibold.woff
new file mode 100644
index 0000000..2963d0e
Binary files /dev/null and b/app/style/font/SourceSansPro-Semibold.woff differ
diff --git a/app/style/font/SourceSansPro-Semibold.woff2 b/app/style/font/SourceSansPro-Semibold.woff2
new file mode 100644
index 0000000..0451728
Binary files /dev/null and b/app/style/font/SourceSansPro-Semibold.woff2 differ
diff --git a/app/style/font/SourceSansPro.css b/app/style/font/SourceSansPro.css
new file mode 100644
index 0000000..ec300b5
--- /dev/null
+++ b/app/style/font/SourceSansPro.css
@@ -0,0 +1,27 @@
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: local('Source Sans Pro Semibold'), local('SourceSansPro-Semibold'),
+        url('SourceSansPro-Semibold.woff2') format('woff2'),
+        url('SourceSansPro-Semibold.woff') format('woff');
+    font-weight: 600;
+    font-style: normal;
+}
+
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: local('Source Sans Pro Italic'), local('SourceSansPro-It'),
+        url('SourceSansPro-It.woff2') format('woff2'),
+        url('SourceSansPro-It.woff') format('woff');
+    font-weight: normal;
+    font-style: italic;
+}
+
+@font-face {
+    font-family: 'Source Sans Pro';
+    src: local('Source Sans Pro'), local('SourceSansPro-Regular'),
+        url('SourceSansPro-Regular.woff2') format('woff2'),
+        url('SourceSansPro-Regular.woff') format('woff');
+    font-weight: normal;
+    font-style: normal;
+}
+
diff --git a/app/style/style.css b/app/style/style.css
new file mode 100644
index 0000000..d41761b
--- /dev/null
+++ b/app/style/style.css
@@ -0,0 +1,166 @@
+:root
+{
+    --color-accent: #D80C49;
+    --color-secondary: #AE1246;
+    --color-light: #EEEEEE;
+    --color-dark: #1D1D1D;
+
+    --font-family: 'Source Sans Pro';
+    --font-size: 18px;
+    --font-color: var(--color-dark);
+
+    --base-size: 25px;
+
+    --animation-ease-out: cubic-bezier(0.075, 0.82, 0.165, 1);
+    --animation-short: .3s;
+}
+
+body, html
+{
+    padding: 0;
+    margin: 0;
+    outline: 0;
+    height: 100%;
+
+    background-color: var(--color-light);
+
+    font-family: var(--font-family);
+    font-size: var(--font-size);
+    line-height: var(--base-size);
+    color: var(--font-color);
+}
+
+body, html, #root
+{
+    width: 100%;
+    height: 100%;
+}
+
+input
+{
+    font-family: var(--font-family);
+    font-size: var(--font-size);
+
+    padding: 0 calc(.6 * var(--base-size));
+    height: calc(2 * var(--base-size));
+}
+
+*, *::before, *::after
+{
+    box-sizing: border-box;
+}
+
+/**
+ * App
+ */
+
+.App
+{
+    width: 100%;
+    height: 100%;
+}
+
+.App .TermInput
+{
+    position: absolute;
+    z-index: 2;
+
+    width: 600px;
+
+    top: calc(2 * var(--base-size));
+    left: 50%;
+    transform: translateX(-50%);
+}
+
+/**
+ * TermInput
+ */
+
+.TermInput
+{
+    display: flex;
+    align-items: center;
+
+    border: 2px solid var(--color-dark);
+    border-radius: 2px;
+    background: white;
+
+    transition: box-shadow var(--animation-short) var(--animation-ease-out);
+}
+
+.TermInput:focus-within
+{
+    box-shadow:
+        -1px -1px 0px var(--color-dark),
+        1px -1px 0px var(--color-dark),
+        1px 1px 0px var(--color-dark),
+        -1px 1px 0px var(--color-dark);
+}
+
+.TermInput_term
+{
+    display: inline-block;
+    background: var(--color-secondary);
+    color: var(--color-light);
+
+    border-radius: 2px;
+    padding: calc(.2 * var(--base-size));
+    margin-left: calc(.3 * var(--base-size));
+    cursor: pointer;
+
+    transition: background var(--animation-short) var(--animation-ease-out);
+}
+
+.TermInput_term:hover
+{
+    background: var(--color-accent);
+}
+
+.TermInput_input
+{
+    flex: 1;
+    border: none;
+}
+
+/**
+ * Graph
+ */
+
+.Graph
+{
+    position: relative;
+    display: block;
+    width: 100%;
+    height: 100%;
+
+    overflow: hidden;
+    user-select: none;
+}
+
+.Graph_edgesContainer
+{
+    position: absolute;
+    z-index: 0;
+
+    top: 0;
+    left 0;
+    width: 100%;
+    height: 100%;
+}
+
+.Graph_edgesContainer line
+{
+    stroke: var(--color-dark);
+}
+
+.Graph_node
+{
+    position: absolute;
+    z-index: 1;
+
+    display: block;
+    transform: translate(-50%, -50%);
+
+    background: white;
+    padding: 4px 8px;
+}
diff --git a/package-lock.json b/package-lock.json
index 5bf3e4c..993e674 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6561,6 +6561,11 @@
         "extend-shallow": "^3.0.0"
       }
     },
+    "springy": {
+      "version": "2.8.0",
+      "resolved": "https://registry.npmjs.org/springy/-/springy-2.8.0.tgz",
+      "integrity": "sha512-PXtwxjww53H/8c+ng3zxMJwNRN/KPv6DKA8ITHi6lW57gfzty0wV/N8ZeTmgfO0ElfQip8W/1iVZk1d5ne4L+g=="
+    },
     "sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
diff --git a/package.json b/package.json
index 983dfec..54f5fd4 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
   },
   "dependencies": {
     "react": "^16.12.0",
-    "react-dom": "^16.12.0"
+    "react-dom": "^16.12.0",
+    "springy": "^2.8.0"
   }
 }