Which immunoglobulin crosses the placenta?
Score: 4.9/5 (43 votes) Maternal immunoglobulin G (IgG) is transported across the placenta by an active, neonatal Fc receptor (FcRn) mediated process during pregnancy.Does IgM or IgG cross the placenta?immunoglobulins - IgA and IgM are excluded from crossing the placenta. Thus IgM antibodies in the ...