title: Ontogeny of immune responsiveness in the absence of the spleen: a review.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001853:Bone Marrow / Q000276:immunology; D004622:Embryo, Mammalian / Q000276:immunology; D007111:Immunity, Cellular; D051379:Mice; D013154:Spleen / Q000002:abnormalities / Q000276:immunology*; D013156:Splenectomy; D013950:Thymus Gland / Q000276:immunology