Related by context. Frequent words. (Click for all words.) 57 copulate 56 vaginal secretions 54 ovulate 53 females 52 mammary tumors 52 Wolbachia 52 genital tract 52 reproductively 52 platypuses 51 males 51 conceive naturally 51 Toxoplasma 51 fibroblast cells 51 oviduct 51 sex hormone estrogen 51 Sexually active 50 premature ovarian 50 mice lacking 50 HPV infections 49 corticosterone 49 ovulated 49 androgen receptors 49 mutant flies 49 rhesus 49 bacterial vaginosis 49 reproductive hormones 49 extract stem cells 49 rhesus macaque 48 lactobacilli 48 mice 48 rhesus macaques 48 granulocytes 48 nonhuman primates 48 spermatozoa 48 artificially inseminate 48 placental mammals 48 hermaphrodites 48 Genital herpes 48 rhesus monkeys 48 forelimbs 48 mutant mice 48 naked mole rats 48 macaques 48 estrus 48 melanogaster 47 nematode worms 47 developmental abnormalities 47 ejaculate 47 C. elegans 47 sexual dimorphism 47 unexplained infertility 47 polycystic ovary syndrome 47 imprinted genes 47 pheromones 47 evolutionarily 47 diabetic mice 47 banteng 47 germ cells 47 female reproductive tract 47 herpes viruses 47 simian immunodeficiency virus 47 pipefish 46 reproductive tract 46 squirrel monkeys 46 mole rats 46 Sexual dysfunction 46 antibodies 46 causes genital warts 46 Fruit flies 46 myoblasts 46 prolactin 46 pluripotent cells 46 somatic cells 46 zebra finches 46 epididymis 46 female hormone estrogen 46 prepubertal 46 difficulty conceiving 46 procreate 46 genetically modified mice 46 testes 46 sperm 46 asexual reproduction 46 humans 46 knockout mice 46 genetically programmed 46 mouse embryos 46 habituate 46 hormonal contraception 45 recessive genes 45 motile 45 endometrial cancers 45 BRCA2 mutations 45 mouthparts 45 elevated CRP 45 ovulating 45 ovarian function 45 X chromosomes 45 vocalisations 45 inseminated 45 littermates