Human complement C7 and C9 in fetal and newborn sera.
Using specific immune sera, C7, C9, and C3 activator were detected in sera from human fetuses more than 16 weeks old and in newborn samples. Levels of C9 in cord sera ranged between 10 and 30% of those present in sera from adult subjects. The mean value of Ce activator was about half that in maternal blood. The mean level of C7 in newborns was nearly 70% of the amount in normal adults.
D000818:Animals; D003176:Complement C3 / Q000032:analysis; D003184:Complement C7 / Q000032:analysis*; D003186:Complement C9 / Q000032:analysis*; D003165:Complement System Proteins / Q000032:analysis*; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011817:Rabbits / Q000276:immunology
D003176:Complement C3; D003184:Complement C7; D003186:Complement C9; D003165:Complement System Proteins