title: Letter: IgM and C3 in serum of Peruvian mothers and cord blood of their infants.
mesh_terms: D001774:Blood Chemical Analysis; D003165:Complement System Proteins / Q000032:analysis*; D005260:Female; D005315:Fetal Diseases / Q000276:immunology*; D006801:Humans; D007075:Immunoglobulin M / Q000032:analysis*; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology*; D012424:Rural Population; D014470:Umbilical Cord
chemical_list: D007075:Immunoglobulin M; D003165:Complement System Proteins