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    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Female reproductive system — Stock Photo
    Female reproductive system
    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.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Egg cell with nucleus, digital illustration. — Stock Photo
    Egg cell with nucleus, digital illustration.
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Balamuthia mandrillaris amoeba organism, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organism, digital illustration.
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Illustration of 2 cell stage egg on blue background. — Stock Photo
    Illustration of 2 cell stage egg on blue background.
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Male sex cell — Stock Photo
    Male sex cell
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Human sperm cells — Stock Photo
    Human sperm cells
    Male sex cell — Stock Photo
    Male sex cell
    Prostate tissue showing Iadenocarcinoma — Stock Photo
    Prostate tissue showing Iadenocarcinoma
    Human egg cell — Stock Photo
    Human egg cell
    3d illustration of sperm cells frozen into ice cubes. — Stock Photo
    3d illustration of sperm cells frozen into ice cubes.
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Human sperm cells — Stock Photo
    Human sperm cells
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    Illustration of 4 cell stage egg on blue background. — Stock Photo
    Illustration of 4 cell stage egg on blue background.
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Egg cells on white background, digital illustration. — Stock Photo
    Egg cells on white background, digital illustration.
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Alstroemeria anther and pollen — Stock Photo
    Alstroemeria anther and pollen
    Breast tissue showing adenocarcinoma — Stock Photo
    Breast tissue showing adenocarcinoma
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell. — Stock Photo
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Magnified digital illustration of implanted blastocyst cell. — Stock Photo
    Magnified digital illustration of implanted blastocyst cell.
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Magnified digital illustration of 16 cell stage embryo. — Stock Photo
    Magnified digital illustration of 16 cell stage embryo.
    3d illustration of in vitro fertilization of egg cell. — Stock Photo
    3d illustration of in vitro fertilization of egg cell.
    3d illustration of egg cell frozen into ice cube. — Stock Photo
    3d illustration of egg cell frozen into ice cube.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Illustration of sperm fertilizing human egg cell. — Stock Photo
    Illustration of sperm fertilizing human egg cell.
    Angel trumpets pollen grain — Stock Photo
    Angel trumpets pollen grain
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Mucosa structure of the cervix — Stock Photo
    Mucosa structure of the cervix
    Male sex cell — Stock Photo
    Male sex cell
    3d illustration of sperm cells frozen into ice cubes. — Stock Photo
    3d illustration of sperm cells frozen into ice cubes.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    3d illustration of sperm cell frozen into ice cube. — Stock Photo
    3d illustration of sperm cell frozen into ice cube.