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    Human fetus developing at week 30, computer illustration. — Stock Photo
    Human fetus developing at week 30, computer illustration.
    Two-cell embryo — Stock Photo
    Two-cell embryo
    Fungal cells revealing sporangium with spores — Stock Photo
    Fungal cells revealing sporangium with spores
    View of fetus at 7 weeks — Stock Photo
    View of fetus at 7 weeks
    Illustration of human silhouette with inflamed uterus. — Stock Photo
    Illustration of human silhouette with inflamed uterus.
    Organs comprising male reproductive system — Stock Photo
    Organs comprising male reproductive system
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Sperm cell, or spermatozoa — Stock Photo
    Sperm cell, or spermatozoa
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    View of fetus at 7 weeks — Stock Photo
    View of fetus at 7 weeks
    Fertilization showing sperm fertilizing an egg — Stock Photo
    Fertilization showing sperm fertilizing an egg
    Illustration of human foetus on week 8 on white background. — Stock Photo
    Illustration of human foetus on week 8 on white background.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Prostate tissue showing Iadenocarcinoma — Stock Photo
    Prostate tissue showing Iadenocarcinoma
    Illustration of silhouette of pregnant woman and 13 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 13 week foetus.
    Male reproductive system — Stock Photo
    Male reproductive system
    Illustration of human foetus on week 18 term. — Stock Photo
    Illustration of human foetus on week 18 term.
    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
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Sperm cells in seminiferous tubule — Stock Photo
    Sperm cells in seminiferous tubule
    Magnified digital illustration of 4 cell stage embryo. — Stock Photo
    Magnified digital illustration of 4 cell stage embryo.
    Illustration of silhouette of pregnant woman and 23 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 23 week foetus.
    View of Fetus at 29 weeks — Stock Photo
    View of Fetus at 29 weeks
    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
    View of Fetus at 5 weeks — Stock Photo
    View of Fetus at 5 weeks
    Illustration of human foetus on week 7 of pregnancy. — Stock Photo
    Illustration of human foetus on week 7 of pregnancy.
    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
    View of Fetus at 16 weeks — Stock Photo
    View of Fetus at 16 weeks
    3d illustration of red transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of red transparent sperm cells swimming towards egg cell.
    View of fetus at 40 weeks — Stock Photo
    View of fetus at 40 weeks
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Cryonic preservation of sperm, conceptual digital illustration. — Stock Photo
    Cryonic preservation of sperm, conceptual digital illustration.
    View of Fetus at 8 weeks — Stock Photo
    View of Fetus at 8 weeks
    3d illustration of transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of transparent sperm cells swimming towards egg cell.
    3d illustration of human sperm cells in reproductive process. — Stock Photo
    3d illustration of human sperm cells in reproductive process.
    3d illustration of sperm cells on blue background. — Stock Photo
    3d illustration of sperm cells on blue background.
    Male reproductive system — Stock Photo
    Male reproductive system
    Human fetus developing at week 18, computer illustration. — Stock Photo
    Human fetus developing at week 18, computer illustration.
    Illustration of red human embryo on black background at pregnancy stage of week 33. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 33.
    Illustration of sperm fertilizing human egg cell. — Stock Photo
    Illustration of sperm fertilizing human egg cell.
    Pregnant woman and 6 week embryo — Stock Photo
    Pregnant woman and 6 week embryo
    Human fetus developing at week 21, computer illustration. — Stock Photo
    Human fetus developing at week 21, computer illustration.
    Human embryonic stem cell, digital illustration. — Stock Photo
    Human embryonic stem cell, digital illustration.
    Pregnant woman holing a pelvic floor training device to prepare for natural birth. — Stock Photo
    Pregnant woman holing a pelvic floor training device to prepare for natural birth.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Female scientist looking in microscope in in vitro fertilisation laboratory. — Stock Photo
    Female scientist looking in microscope in in vitro fertilisation laboratory.
    Molecular model of follicle-stimulating hormone. — Stock Photo
    Molecular model of follicle-stimulating hormone.
    Human fetus developing at week 12, computer illustration. — Stock Photo
    Human fetus developing at week 12, computer illustration.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Illustration of human foetus on week 4 on black background. — Stock Photo
    Illustration of human foetus on week 4 on black background.
    Liquid nitrogen pouring into cryostorage canister. — Stock Photo
    Liquid nitrogen pouring into cryostorage canister.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    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)
    View of Fetus at 6 weeks — Stock Photo
    View of Fetus at 6 weeks
    Human fetus developing at week 39, computer illustration. — Stock Photo
    Human fetus developing at week 39, computer illustration.
    Illustration of red human embryo on black background at pregnancy stage of week 11. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 11.
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish. — Stock Photo
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish.
    Fertilization of human egg — Stock Photo
    Fertilization of human egg