Related by context. Frequent words. (Click for all words.) 56 spinal cord 50 spines 50 muscle tissue 50 diseased 50 spinal column 48 tendons 47 tissue 47 intestines 45 internal organs 45 tissues 44 connective tissues 44 livers 44 spinal 43 pancreatic cells 43 spine 43 motor neurons 42 neurologically 42 ovaries 42 diseased tissue 42 limbs 41 stem cells 41 connective tissue 41 nerve cells 41 carotid arteries 41 allograft 41 abdomens 41 blood vessels 41 spinal cord injuries 40 islet cells 40 vertebrae 40 diseased cells 40 muscle fibers 40 muscles 40 fetuses 40 liver 40 bones 40 vital organs 40 retinal cells 39 ovarian tissue 39 brain 39 peripheral nerves 39 bone marrow stem cells 39 cardiomyocytes 39 cancerous tumors 39 mesenchymal stem cells 39 cartilage 39 ligaments 39 axons 39 kidneys 39 bone 39 regrow 39 brains 38 skeletal muscle 38 uterus 38 spinal injuries 38 soft tissues 38 neural stem cells 38 ovary 38 hematopoietic stem cells 38 ventricles 38 prions 38 small intestine 38 organs 38 motor neuron disease 38 testes 37 transgenic mice 37 hair follicles 37 femur 37 vertebral 37 optic nerve 37 spina bifida 37 cadavers 37 nerve endings 37 pelvic bone 37 vasculature 37 Adult stem cells 37 reproductive organs 37 retinas 37 articular cartilage 37 spinal fluid 37 vaginally 37 organelles 36 embryos 36 neurones 36 degenerative disease 36 arteries 36 pancreas 36 spinal canal 36 mice 36 corneas 36 extracellular matrix 36 surgically 36 torsos 36 stem cells derived 36 mutant mice 36 ex vivo 36 gene therapy 36 pelvis 36 cervical spine 36 fatty tissue 36 leptin