embryo, spermatozoa, somatic cell, blastomeres, hepatocytes, sperm, blastocyst, gametes, spermatogenesis, ovary, corpus luteum, follicle stimulating hormone, ova, follicles, oviducts, embryonic tissue, fibroblasts, granulocytes, allogeneic, ovule, vitro, engraftment, yolk sac, adipose tissue, amnion, ovarian, endometrium, ex vivo, testis, mesenchymal, embryogenesis, colostrum, erythrocytes, conceptus, gastrulation, thymus, autologous, aneuploidy, cdna, syngeneic, umbilical vein, centrosomes, chimerism, dedifferentiation, zona pellucida, centrioles, somites, hematopoietic, vitrification, choroid plexus, antithrombin, rotifer, teratoma, parthenogenesis, scnt, lymphocytes, suppressor gene, acinar, prolactin, oligodendrocytes, thyrotropin, oxidative phosphorylation, mosaicism, osteoblast, endoderm, skeletal muscle, hmg, placentas, meiosis, cryopreservation, rhesus, xenopus, fertilized egg, estrus, nephron, trophoblast, tissue, hyperplasia, microinjection, uteri, serum albumin, mrna, progesterone, fertilization, vernalization, transgenic, eggs, proliferative, adrenal cortex, mammary gland, motoneurons, estrous cycle, luteal phase, proteolysis, virions, mesenchyme, methylation, neonate, ovariectomy, allograft, transplantation, livers, oocyte, embryos, chondrocytes, zygotes, blastocysts, neutrophils, lutea, monocytes, sperms, leukocytes, platelets, spermatids