title: Anti-A and anti-B blood group antibody levels in relation to age in cynomolgus monkeys.
abstract: Anti-A and anti-B blood group antibody levels were determined with serum samples of 583 cynomolgus monkeys of group-A and group-B, aged from 4 days to 15 years or more. Eight group-A infants free from anti-B antibody at ages of 4 to 25 days were consecutively followed up for the appearance of anti-B antibody. It appeared at ages between 68 and 160 days. Both anti-A and anti-B levels rose with increase in the age and reached a maximum at the age of 4 to 5 years. After that the levels gradually fell with aging.
mesh_terms: D000017:ABO Blood-Group System / Q000276:immunology*; D000367:Age Factors; D000818:Animals; D007518:Isoantibodies / Q000032:analysis*; D008251:Macaca / Q000276:immunology*; D008252:Macaca fascicularis / Q000276:immunology*
chemical_list: D000017:ABO Blood-Group System; D007518:Isoantibodies