Related by context. Frequent words. (Click for all words.) 64 unfertilized 63 regrows 61 spermatogonial stem cells 60 reproduce asexually 60 yolk sac 60 erectile tissue 59 unfertilized eggs 59 oviduct 59 germline stem cells 58 mesenchymal stem cells MSCs 58 Sertoli cells 58 overwinters 58 frozen thawed 57 pinhead sized 57 haploid 57 spermatozoa 57 fertilized embryo 57 unspecialized 57 fertilize eggs 57 larvae hatch 56 unfertilized human 56 skeletal muscle cells 56 lysozyme 56 herbage 56 flatworm 56 unfertilized egg 55 fertilized chicken 55 nematode worms 55 captive giant pandas 55 flatworms 55 diploid 55 endometrial tissue 55 medullary bone 55 placental tissue 55 ovary 55 oocyte 55 glandular tissue 55 gastrointestinal tracts 55 zygotes 55 undifferentiated cells 55 female reproductive tract 55 retinal pigment epithelium 55 mycelium 54 extract stem cells 54 stem cells harvested 54 transfer SCNT 54 pistil 54 unsprayed 54 Xenopus 54 fruitflies 54 plant Arabidopsis thaliana 54 milt 54 reimplanted 54 Cysts 54 blastomeres 54 tuberous 54 oyster mushroom 54 cryopreserved 54 ovulated 54 endosperm 54 fruiting bodies 54 stem cells extracted 54 oocytes 54 triploid 53 testicular tissue 53 springtails 53 IVF embryos 53 nephrons 53 gonadal 53 Thoroughly cooking 53 pancreatic tissue 53 microinjection 53 self pollinating 53 pelleted 53 hen egg 53 oocysts 53 pigment melanin 53 nonhuman primate 53 gonadotropins 53 vaginal secretions 53 peroxidase 52 blastocyst stage 52 somatic cells 52 Thrips 52 anthers 52 cloned embryo 52 follicles 52 saltbush 52 multicellular organism 52 fertilized 52 midgut 52 hippocampal neurons 52 opsin 52 defatted 52 erythrocytes 52 leafhoppers 52 algal biomass 52 egg laying 52 egg sacs 52 genetic manipulations 52 granulocytes