Related by context. Frequent words. (Click for all words.) 62 contagious yawning 61 taste receptors 60 suppresses appetite 60 human microbiome 59 luteolin 59 olfactory receptors 58 mimic estrogen 58 vaginal secretions 58 fruitflies 58 Pheromones 57 serotonin neurotransmitter 57 naturally occurring molecule 57 humans 57 neuropeptides 56 evolutionary origins 56 amino acid tryptophan 56 sex hormone estrogen 56 endocannabinoids 56 gut microbes 56 tumor suppressor protein 56 HLA genes 56 neurochemicals 56 fatty acid synthase 56 galanin 56 mutagens 56 cannabinoid receptors 55 molecular underpinnings 55 experimentally induced 55 endocrine glands 55 hormone ghrelin 55 protein albumin 55 Toxoplasma 55 neuronal circuits 55 nematode worms 55 Molecular Cancer 55 olfactory nerve 55 Cotsarelis 55 epicatechin 55 protein tau 55 releases endorphins 54 Neu5Gc 54 mutant proteins 54 Klotho 54 Orexin 54 melanopsin 54 neural cells 54 fibroblast cells 54 micro RNAs 54 pomegranate extract 54 gastrointestinal tracts 54 mutated protein 54 odorant receptors 54 interleukins 54 apoE 54 polyamines 54 chemical messengers 54 odorants 54 seratonin 54 infectious prions 54 Sertoli cells 54 Fruit flies 54 neuropeptide Y 54 Nerve cells 54 tau tangles 54 methylation patterns 54 receptor proteins 54 androgen receptors 54 Endorphins 54 calcineurin 54 amyloid fibrils 54 CB1 receptors 54 abnormal growths 54 cone snails 53 Immune cells 53 receptor molecule 53 Helicobacter 53 genetic alteration 53 unicellular 53 upregulate 53 genetically altered mice 53 Saturated fats 53 hormone oxytocin 53 Vosshall 53 AMPA receptors 53 neurotransmitter serotonin 53 phytoestrogens 53 amyloid proteins 53 optogenetics 53 nicotinamide 53 act synergistically 53 GABA receptors 53 Therapeutic cloning 53 neurone 53 neuroligin 53 ganglion cells 53 cellular metabolism 53 TRPM8 53 mirror neurons 53 FGF# 53 NKT cells 53 commercial bioproduction