Related by context. Frequent words. (Click for all words.) 66 liver 61 kidneys 58 organs 53 kidney 51 marrow 50 grafts 50 stem cells 50 blood vessels 49 intestine 49 bone marrow 49 transplants 49 islet cells 49 pancreas 49 tissue 48 internal organs 48 brains 48 corneas 48 liver transplants 48 intestines 48 oocytes 48 diseased 47 sperm 46 fibroblasts 46 tissues 46 testes 45 embryos 45 penises 45 transplantation 45 ovaries 45 bladders 45 follicles 45 ovary 45 stem cell transplants 45 muscle tissue 45 donor organs 44 tissue samples 44 lungs 44 spinal cords 44 cells 44 progenitor cells 44 kidney transplants 44 neural stem cells 44 organ 43 vital organs 43 mice 43 skeletal muscle 43 retinas 43 bone marrow transplants 42 organ transplants 42 zebrafish 42 stomachs 42 adipose tissue 42 testicles 41 pancreatic 41 blood platelets 41 platelets 41 brain 41 arteries 41 Organs 41 ventricles 41 lung tissue 41 lung 41 embryo 41 adult stem cells 41 aorta 40 pickled 40 transplant 40 fillets 40 bellies 40 wombs 40 oysters 40 uterus 40 ventricle 40 endothelial cells 40 lung tumors 40 collagen 40 transfusions 40 thymus 40 muscle fibers 40 genetically 39 Liver 39 mitochondria 39 hair follicles 39 pituitary 39 tumors 39 telomeres 39 salivary glands 39 kidney function 39 fatty 39 small intestine 39 cadavers 39 breast tissue 39 platelet 38 transplanted 38 liver transplant 38 transplant recipients 38 boneless 38 carotid arteries 38 specimens 38 organ transplantation 38 fertilized eggs