systemic administration of small numbers of fetal cells but not placental cells from allogeneically pregnant mice ( 10 ( 6 ) cells per mouse ) or adult allogeneic spleen cells ( 10 ( 4 ) cells ) sensitized mice for second-set rejection of an ascitic tumor bearing paternal major histocompatibility complex ( mhc ) antigens .
C3485979
allogeneic
C0007634
cells