Related by context. Frequent words. (Click for all words.) 45 rats 44 mice 44 Mice 43 deficient mice 42 vasopressin 41 transgenic mice 41 intestinal bacteria 40 Parasites 40 Rats 39 BDNF 39 roundworms 39 knockout mice 39 genetically modified mice 38 Rodents 38 Toxin 38 Rodent 37 orexin 37 dopamine neurons 37 mouse embryos 37 Mammals 36 Toxins 36 Larvae 36 rhesus monkeys 36 mutant mice 36 neuronal cells 35 neurogenesis 35 macrophage 35 lab rats 35 Mutant 35 Skunk 35 mutant 34 diabetic mice 34 dopamine receptors 34 C. elegans 34 Ferrets 34 parasites 34 larval stage 34 rodents 34 fruit flies 34 rhesus macaques 34 eosinophils 33 Skunks 33 Rabbits 33 neurons 33 neurones 33 glutamate 33 leptin 33 Rat 33 larval 33 nonhuman primates 32 Hamsters 32 leukocytes 32 digestive tracts 32 Roaches 32 Cells 32 pheromones 32 astrocytes 31 habituation 31 ghrelin 31 rat 31 pheromone 31 Mites 31 genetically engineered mice 31 parasitic worms 31 mutants 31 zebrafish 31 Insects 30 Bacteria 30 mice rats 30 Cockroaches 30 microglia 30 monkeys 30 Bumblebees 30 Feces 29 Songbirds 29 macrophages 29 mouse 29 Pussy 29 voles 29 Rotting 29 Maggots 29 Felines 29 Aphids 29 Pests 29 Rattlesnakes 29 Tarantulas 28 Snails 28 hamsters 28 Smell 28 larvae 28 beetles 28 mites 28 untreated mice 28 nematodes 28 Pigeons 27 Suckers 27 Bugs 27 Toads 27 humans 27 Mosquitos 27 Critters