[Changes in trophoblasts in tissue culture. (A histochemical study].
D004475:Ectoderm; D005321:Extraembryonic Membranes; D005260:Female; D006801:Humans; D011247:Pregnancy; D012107:Research Design; D046509:Tissue Culture Techniques; D014327:Trophoblasts
ECTODERM; FETAL MEMBRANES; TISSUE CULTURE