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    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration. — Stock Photo
    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration.
    Human fetus developing at week 13, computer illustration. — Stock Photo
    Human fetus developing at week 13, computer illustration.
    Human fetus developing at week 5, computer illustration. — Stock Photo
    Human fetus developing at week 5, computer illustration.
    Pregnant woman meditating outdoors — Stock Photo
    Pregnant woman meditating outdoors
    Cells dividing, computer illustration — Stock Photo
    Cells dividing, computer illustration
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Illustration of uterus in silhouette of female body. — Stock Photo
    Illustration of uterus in silhouette of female body.
    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
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Prevention of transplacental HIV transmission to human embryo from infected mother, conceptual illustration. — Stock Photo
    Prevention of transplacental HIV transmission to human embryo from infected mother, conceptual illustration.
    Illustration of human foetus on week 6 of pregnancy. — Stock Photo
    Illustration of human foetus on week 6 of pregnancy.
    Human fetus developing at week 39, computer illustration. — Stock Photo
    Human fetus developing at week 39, computer illustration.
    Digital illustration of yeast and hyphae stages of Candida albicans fungus. — Stock Photo
    Digital illustration of yeast and hyphae stages of Candida albicans fungus.
    Human fetus developing at week 4, computer illustration. — Stock Photo
    Human fetus developing at week 4, computer illustration.
    Sperm cell fertilising an egg cell — Stock Photo
    Sperm cell fertilising an egg cell
    Illustration of human foetus on week 7 on blue background. — Stock Photo
    Illustration of human foetus on week 7 on blue background.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    3d illustration of cryopreserved foetus frozen into ice cube. — Stock Photo
    3d illustration of cryopreserved foetus frozen into ice cube.
    View of Fetus at 7 weeks — Stock Photo
    View of Fetus at 7 weeks
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    View of Fetus at 5 weeks — Stock Photo
    View of Fetus at 5 weeks
    Male Bluegill Triggerfish (Xanthichthys auromarginatus) with an erect spinous dorsal fin photographed under water off Maui, Hawaii, USA. He was circling above his prepared spawning area suggesting that this is a courtship display; Maui, Hawaii, Unite — Stock Photo
    Male Bluegill Triggerfish (Xanthichthys auromarginatus) with an erect spinous dorsal fin photographed under water off Maui, Hawaii, USA. He was circling above his prepared spawning area suggesting that this is a courtship display; Maui, Hawaii, Unite
    Human fetus developing at week 36, computer illustration. — Stock Photo
    Human fetus developing at week 36, computer illustration.
    Illustration of human foetus on week 8 of pregnancy. — Stock Photo
    Illustration of human foetus on week 8 of pregnancy.
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Male reproductive system — Stock Photo
    Male reproductive system
    Abstract fungus, scientific digital illustration. — Stock Photo
    Abstract fungus, scientific digital illustration.
    Illustration of red human embryo on black background at pregnancy stage of week 26. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 26.
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    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)
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Illustration of red human embryo on black background at pregnancy stage of week 20. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 20.
    Female doctor in blue uniform and sterile mask examining unrecognizable patient on gynecological chair in fertility clinic — Stock Photo
    Female doctor in blue uniform and sterile mask examining unrecognizable patient on gynecological chair in fertility clinic
    View of Fetus at 15 weeks — Stock Photo
    View of Fetus at 15 weeks
    Egg and sperm fertilization process — Stock Photo
    Egg and sperm fertilization process
    Meiotic cell division — Stock Photo
    Meiotic cell division
    Uterus in female body, anatomical computer illustration. — Stock Photo
    Uterus in female body, anatomical computer illustration.
    3d illustration of sperm cells on blue background. — Stock Photo
    3d illustration of sperm cells on blue background.
    View of Fetus at 6 weeks — Stock Photo
    View of Fetus at 6 weeks
    Digital illustration of pollen grain on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grain on anther of Chinese hibiscus flower.
    Organs comprising male reproductive system — Stock Photo
    Organs comprising male reproductive system
    Illustration of silhouette of pregnant woman and 7 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 7 week foetus.
    Pollen grains from different plants, computer illustration — Stock Photo
    Pollen grains from different plants, computer illustration
    View of fetus at 30 weeks — Stock Photo
    View of fetus at 30 weeks
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Illustration of human foetus on week 5 of pregnancy. — Stock Photo
    Illustration of human foetus on week 5 of pregnancy.
    Illustration of red human embryo on black background at pregnancy stage of week 17. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 17.
    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.
    Male sex cell — Stock Photo
    Male sex cell
    Illustration of sperm fertilizing human egg cell. — Stock Photo
    Illustration of sperm fertilizing human egg cell.
    Illustration of fertilized human egg cell. — Stock Photo
    Illustration of fertilized human egg cell.
    France, Burgundy, Yonne. Area of Saint Fargeau and Boutissaint. Slab season. Stag striking its wood against the trunk of tree. — Stock Photo
    France, Burgundy, Yonne. Area of Saint Fargeau and Boutissaint. Slab season. Stag striking its wood against the trunk of tree.
    Egg and sperm fertilization process — Stock Photo
    Egg and sperm fertilization process
    Male reproductive system — Stock Photo
    Male reproductive system
    Illustration of red human embryo on black background at pregnancy stage of week 38. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 38.
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Digital illustration of budding Saccharomyces cerevisiae yeast cells. — Stock Photo
    Digital illustration of budding Saccharomyces cerevisiae yeast cells.
    3d illustration of human sperm cells in reproductive process. — Stock Photo
    3d illustration of human sperm cells in reproductive process.
    Abstract fungus, scientific digital illustration. — Stock Photo
    Abstract fungus, scientific digital illustration.