During development of the male fetus, the testes release ... were lower in the female fetal circulation. They also found that enzymes needed for the backdoor pathway were present primarily in ...

Throughout life, FcRn contributes to effective humoral immunity by recycling IgG and extending its half-life in the circulation ... from a mother to her fetus. In addition, throughout life ...

In early-onset severe hemolytic disease of the fetus and newborn (HDFN), transplacental transfer of maternal antierythrocyte IgG alloantibodies causes fetal anemia that leads to the use of high ...