Strain specific analysis of FcRn expression in B-NDG(+/+) and B-NDG hFcRn mice by western blot.Liver was collected from B-NDG(+/+)  mice  and heterozygous B-NDG hFcRn(H/+)  mice and analyzed by western blot with species-specific anti-FcRn antibody. Mouse FcRn was detectable in B-NDG(+/+) and heterozygous B-NDG hFcRn(H/+) mice . Human FcRn was detectable only in heterozygous B-NDG hFcRn(H/+)  but not in B-NDG(+/+) mice.