Passive and active immunity to Friend virus disease.
D000818:Animals; D005260:Female; D005622:Friend murine leukemia virus / Q000276:immunology*; D007110:Immunity, Active; D007112:Immunity, Maternally-Acquired; D007942:Leukemia, Experimental / Q000276:immunology*; D008431:Maternal-Fetal Exchange; D051379:Mice; D009929:Organ Size; D011247:Pregnancy; D013154:Spleen