Related by context. Frequent words. (Click for all words.) 58 oocytes 56 spermatozoa 56 oocyte 55 cryopreserved 53 germ cells 53 somatic cell 52 fibroblast cells 52 somatic cells 52 IVF embryos 51 embryo 51 fertilized eggs 51 granulocytes 51 transgenic plants 51 undifferentiated cells 51 Embryos 50 peripheral blood mononuclear 50 mouse embryos 50 teratoma 50 zebrafish embryos 50 neural stem cells 50 sperms 49 myeloma cells 49 exosomes 49 erythrocytes 49 tumor antigens 49 ovarian stimulation 49 umbilical cord stem cells 49 embryos 49 Neu5Gc 49 mesenchymal cells 49 blastocysts 49 testicular tissue 49 leukocyte 48 cultured cells 48 breast carcinoma 48 ovum 48 endothelial progenitor cells 48 ovary 48 follicle stimulating hormone 48 cells hESCs 48 ovaries 48 diploid 48 cloned embryo 48 adipocytes 48 ovarian tumor 48 transgenes 48 gamete 48 gametes 48 myoblasts 48 stromal cells 48 transgenic mice 48 oviduct 47 hES cells 47 lysozyme 47 hematopoietic stem cells 47 fertilized embryos 47 T. gondii 47 imprinted genes 47 ovulated 47 ovarian tissue 47 antithrombin 47 transgenic mouse 47 fine needle aspiration 47 pituitary glands 47 clonal 47 transgene 47 mammalian cells 47 pancreatic cells 47 HeLa cells 47 bioassays 46 stem cells 46 follicles 46 hepatocytes 46 RPE cells 46 thymus 46 viral vector 46 embryo implantation 46 female reproductive tract 46 IL 1beta 46 formalin fixed paraffin embedded 46 infectious prions 46 endosomes 46 B. anthracis 46 blastocyst stage 46 pupae 46 tadpoles 46 RBCs 46 Langerhans cells 45 hepatocyte 45 unfertilized egg 45 biopsy specimens 45 pancreatic islet cells 45 CD# + [002] 45 reproductive toxicity 45 Caenorhabditis elegans 45 vaginal secretions 45 pluripotent cells 45 keratinocytes 45 sperm 45 pancreases 45 fetal tissue