Figure 1From: Mutation study of Spanish patients with Hereditary Hemorrhagic TelangiectasiaThe missense mutations previously described for the extracellular part of endoglin and the intracellular part of ALK1 are shown as blue spheres. The new mutations described in this report for both proteins appear as green spheres. The volume of the spheres is exclusively related to the size of the mutated residue side chain.Back to article page