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    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Human ovary structure — Stock Photo
    Human ovary structure
    Human sperm cells — Stock Photo
    Human sperm cells
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Magnified digital illustration of implanted blastocyst cell. — Stock Photo
    Magnified digital illustration of implanted blastocyst cell.
    Male sex cell — Stock Photo
    Male sex cell
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Illustration of yellow human egg cell on blue background. — Stock Photo
    Illustration of yellow human egg cell on blue background.
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Male sex cell — Stock Photo
    Male sex cell
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla). — Stock Photo
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla).
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Digital illustration of pollen grain on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grain on anther of Chinese hibiscus flower.
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Illustration of human egg cell dividing on blue background. — Stock Photo
    Illustration of human egg cell dividing on blue background.
    Male sex cell — Stock Photo
    Male sex cell
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Illustration of 4 cell stage egg on black background. — Stock Photo
    Illustration of 4 cell stage egg on black background.
    Illustration of fertilized human egg cell. — Stock Photo
    Illustration of fertilized human egg cell.
    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.
    3d illustration of egg cell frozen into ice cube. — Stock Photo
    3d illustration of egg cell frozen into ice cube.
    Magnified digital illustration of 16 cell stage embryo. — Stock Photo
    Magnified digital illustration of 16 cell stage embryo.
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Syphilis ulcer on vulva — Stock Photo
    Syphilis ulcer on vulva
    Epithelial lining of Fallopian tube — Stock Photo
    Epithelial lining of Fallopian tube
    3d illustration of sperm cell frozen into ice cube. — Stock Photo
    3d illustration of sperm cell frozen into ice cube.
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Illustration of 8 cell stage egg on blue background. — Stock Photo
    Illustration of 8 cell stage egg on blue background.
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    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.
    3d illustration of sperm cell frozen into ice cube. — Stock Photo
    3d illustration of sperm cell frozen into ice cube.
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Magnified digital illustration of fertilisation of egg cell. — Stock Photo
    Magnified digital illustration of fertilisation of egg cell.
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Balamuthia mandrillaris amoeba organism, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organism, digital illustration.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    Illustration of unfertilized human egg cell. — Stock Photo
    Illustration of unfertilized human egg cell.
    In vitro fertilisation process — Stock Photo
    In vitro fertilisation process
    Angel trumpets pollen grain — Stock Photo
    Angel trumpets pollen grain
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Egg cell with nucleus, digital illustration. — Stock Photo
    Egg cell with nucleus, digital illustration.
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Illustration of pink human egg cell on black background. — Stock Photo
    Illustration of pink human egg cell on black background.