The functional development of the reticulo-endothelial system in the toad, Xenopus laevis (Daudin).
D000818:Animals; D001001:Anura; D008264:Macrophages; D008722:Methods; D012157:Mononuclear Phagocyte System / Q000254:growth & development / Q000502:physiology*; D010587:Phagocytosis