Related by context. Frequent words. (Click for all words.) 63 reproductive tract 60 genital tract 59 spermatozoa 58 oocyte 58 lymphatic vessels 58 vesicle 58 outer membrane 57 testis 57 germ cells 56 fallopian tube 56 atherosclerotic plaques 56 tubules 56 plasma membrane 56 somatic cells 56 organelle 55 ovary 55 testes 55 neural tube 55 epithelial cells 55 uterus 54 ventral 54 ureter 54 neuronal cells 54 meiosis 54 flagella 54 oocytes 54 epithelium 54 cultured cells 54 collagen fibers 54 bronchi 54 unfertilized egg 54 pharynx 54 forebrain 53 ectopic 53 fibroblast 53 motility 53 thymus 53 cytoplasm 53 capsid 53 mammary gland 53 mammary glands 53 helices 53 mouse embryos 53 reproductive hormones 53 lysozyme 53 mammalian cells 53 abdominal cavity 53 urethra 53 ovum 53 PrP 52 uterine wall 52 endoplasmic reticulum 52 glycans 52 digestive tract 52 uterine lining 52 placental 52 embryogenesis 52 mutant protein 52 hind limbs 52 Supplementary Fig 52 neonate 52 glycoproteins 52 micelles 52 stromal cells 52 intestines 52 integrins 52 conformational 52 tracheal 52 rumen 52 olfactory bulb 52 dorsal 52 apical 52 estrus 51 astrocyte 51 intestinal tract 51 stromal 51 cell membrane 51 alveoli 51 epithelial cell 51 chloroplasts 51 transiently 51 endometrium 51 endocytosis 51 auxin 51 axon 51 myoglobin 51 intestinal lining 51 Schwann cells 51 sensory neurons 51 vesicles 51 effector 50 Golgi 50 aspirate 50 prion protein 50 heterochromatin 50 yeast cells 50 enzymatic activity 50 pulmonary arteries 50 cilia 50 microflora 50 intestine