title: Deficiencies in regulator proteins. 3. Properdin.
mesh_terms: D003176:Complement C3 / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D011414:Properdin / Q000172:deficiency* / Q000235:genetics
chemical_list: D003176:Complement C3; D011414:Properdin