Related by context. Frequent words. (Click for all words.) 77 follicles 65 epidermis 62 nerve cells 62 muscle tissue 62 blood vessels 59 glands 59 collagen 58 tumor cells 58 cancerous cells 58 ovaries 57 nerve endings 56 cells 56 hairs 56 nerve fibers 56 gland 56 immune cells 56 epithelial cells 55 testes 55 capillaries 55 tumors 55 fibroblasts 55 neurons 55 melanin 55 progenitor cells 55 skin 55 pores 54 pancreas 54 tissues 53 stem cells 53 mucus 52 motor neurons 52 breast tissue 51 lung tissue 51 tumor 51 pigmentation 51 axons 51 tissue 51 uterus 51 neuron 50 cortex 50 internal organs 50 intestines 50 cornea 50 secretions 50 ovary 50 digestive tract 50 mitochondria 50 thyroid gland 50 myelin 50 endothelial cells 50 optic nerve 50 pituitary gland 49 lymphocytes 49 metabolism 49 retina 49 hair 49 proteins 49 cancerous tumors 49 intestine 49 enzymes 49 bloodstream 48 telomeres 48 adipose tissue 48 bacteria 48 enzyme 48 prostate gland 48 cerebellum 48 scar tissue 48 urethra 48 nasal passages 48 brain 48 connective tissue 48 secretion 48 gastrointestinal tract 48 intestinal tract 48 cell membranes 48 lungs 48 cartilage 47 neutrophils 47 macrophages 47 lesions 47 ear canal 47 synapses 47 electrodes 47 soft tissues 47 telomerase 47 whiskers 47 antibodies 47 small intestine 47 biofilm 47 molecules 47 larvae 47 clot 47 hormone 47 clots 47 testicles 47 cytokines 47 regrow 46 biofilms 46 dendritic cells 46 lymphatic system