title: Maternal-fetal relation. II. Further characterization of an immunologic blocking factor that develops during pregnancy.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D005260:Female; D006168:Guinea Pigs; D006650:Histocompatibility Testing; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis / Q000302:isolation & purification; D007961:Leukocyte Migration-Inhibitory Factors / Q000096:biosynthesis; D008213:Lymphocyte Activation; D008297:Male; D008431:Maternal-Fetal Exchange; D010920:Placenta / Q000032:analysis; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000032:analysis / Q000096:biosynthesis / Q000494:pharmacology*; D011262:Pregnancy Trimester, Second; D014327:Trophoblasts / Q000276:immunology
chemical_list: D007074:Immunoglobulin G; D007961:Leukocyte Migration-Inhibitory Factors; D011257:Pregnancy Proteins