http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm Complement component 3 (C3) http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm medlineplus MedlinePlus: Complement Component 3 (C3) http://www.nlm.nih.gov/medlineplus/ency/article/003539.htm Medline Plus: Componente 3 do complemento (C3) [em inglês]