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    Human embryo with four cells — Stock Photo
    Human embryo with four cells
    Illustration of human foetus on week 14 term. — Stock Photo
    Illustration of human foetus on week 14 term.
    View of fetus at 17 weeks — Stock Photo
    View of fetus at 17 weeks
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration. — Stock Photo
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration.
    Illustration of human foetus on week 8 on blue background. — Stock Photo
    Illustration of human foetus on week 8 on blue background.
    3d illustration of cryopreserved foetus frozen into ice cube held by robotic arm. — Stock Photo
    3d illustration of cryopreserved foetus frozen into ice cube held by robotic arm.
    Illustration of human foetus on week 37 term. — Stock Photo
    Illustration of human foetus on week 37 term.
    Kingella kingae bacteria, computer illustration. K. kingae is a Gram-negative coccobacillus that is part of the normal flora of children's throats. It can occasionally cause invasive disease, primarily osteomyelitis (bone infection) — Stock Photo
    Kingella kingae bacteria, computer illustration. K. kingae is a Gram-negative coccobacillus that is part of the normal flora of children's throats. It can occasionally cause invasive disease, primarily osteomyelitis (bone infection)
    Parasites attacking sperm cell, conceptual illustration. — Stock Photo
    Parasites attacking sperm cell, conceptual illustration.
    Illustration of silhouette of pregnant woman and 4 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 4 week foetus.
    Illustration of overweight woman with visible uterus on black background. — Stock Photo
    Illustration of overweight woman with visible uterus on black background.
    Illustration of red human embryo on black background at pregnancy stage of week 13. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 13.
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Illustration of silhouette of pregnant woman and 12 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 12 week foetus.
    Illustration of cancerous tumour in female uterus. — Stock Photo
    Illustration of cancerous tumour in female uterus.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Breast tissue showing adenocarcinoma — Stock Photo
    Breast tissue showing adenocarcinoma
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    Human fetus developing at week 26, computer illustration. — Stock Photo
    Human fetus developing at week 26, computer illustration.
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    View of Fetus at 8 weeks — Stock Photo
    View of Fetus at 8 weeks
    Human embryo cell, digital illustration. — Stock Photo
    Human embryo cell, digital illustration.
    Digital illustration of budding Saccharomyces cerevisiae yeast cells. — Stock Photo
    Digital illustration of budding Saccharomyces cerevisiae yeast cells.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Close-up illustration of colored pollen grain of mimosa plant. — Stock Photo
    Close-up illustration of colored pollen grain of mimosa plant.
    Illustration of red human embryo on black background at pregnancy stage of week 27. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 27.
    Illustration of human foetus on week 27 term. — Stock Photo
    Illustration of human foetus on week 27 term.
    Human fetus developing at week 39, computer illustration. — Stock Photo
    Human fetus developing at week 39, computer illustration.
    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    Illustration of silhouette of pregnant woman with visible uterus and 4 cell stage embryo. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and 4 cell stage embryo.
    Magnified digital illustration of fertilisation of egg cell. — Stock Photo
    Magnified digital illustration of fertilisation of egg cell.
    Illustration of silhouette of pregnant woman and 11 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 11 week foetus.
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells.
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells.
    3d illustration of sperm cells on blue background. — Stock Photo
    3d illustration of sperm cells on blue background.
    Coloured scanning electron micrograph (SEM) of Mould, hyphae, conidiophores (fruiting structures) and conidium (asexual spore) formation (Penicillium sp.;likely Penicillum candidum). — Stock Photo
    Coloured scanning electron micrograph (SEM) of Mould, hyphae, conidiophores (fruiting structures) and conidium (asexual spore) formation (Penicillium sp.;likely Penicillum candidum).
    View of Fetus at 25 weeks — Stock Photo
    View of Fetus at 25 weeks
    Illustration of human foetus on week 11 term. — Stock Photo
    Illustration of human foetus on week 11 term.
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Human fetus developing at week 30, computer illustration. — Stock Photo
    Human fetus developing at week 30, computer illustration.
    View of Fetus at 25 weeks — Stock Photo
    View of Fetus at 25 weeks
    Cryogenic human egg storage for In vitro fertilisation . — Stock Photo
    Cryogenic human egg storage for In vitro fertilisation .
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation — Stock Photo
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation
    Human fetus developing at week 19, computer illustration. — Stock Photo
    Human fetus developing at week 19, computer illustration.
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation — Stock Photo
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation
    Organs comprising male reproductive system — Stock Photo
    Organs comprising male reproductive system
    Illustration of female silhouette with highlighted painful uterus. — Stock Photo
    Illustration of female silhouette with highlighted painful uterus.
    Organs of reproductive system — Stock Photo
    Organs of reproductive system
    Human embryo cells, scientific medical illustration. — Stock Photo
    Human embryo cells, scientific medical illustration.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Close-up of mating six spot burnet moths on common thistle flower. — Stock Photo
    Close-up of mating six spot burnet moths on common thistle flower.
    Female copepod with eggs — Stock Photo
    Female copepod with eggs
    Illustration of female silhouette with highlighted uterus. — Stock Photo
    Illustration of female silhouette with highlighted uterus.
    View of Fetus at 27 weeks — Stock Photo
    View of Fetus at 27 weeks
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Queen bee cones in honeycomb — Stock Photo
    Queen bee cones in honeycomb
    Immature dog sperm — Stock Photo
    Immature dog sperm