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    Parasites attacking sperm cell, conceptual illustration. — Stock Photo
    Parasites attacking sperm cell, conceptual illustration.
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Parasites attacking female egg cell, digital illustration. — Stock Photo
    Parasites attacking female egg cell, digital illustration.
    Close-up illustration of colored pollen grain of mimosa plant. — Stock Photo
    Close-up illustration of colored pollen grain of mimosa plant.
    Close-up illustration of colored pollen grain of mimosa plant. — Stock Photo
    Close-up illustration of colored pollen grain of mimosa plant.
    Transparent cells on grey background, digital illustration. — Stock Photo
    Transparent cells on grey background, digital illustration.
    Digital illustration of Acanthamoeba castellanii amoebas. — Stock Photo
    Digital illustration of Acanthamoeba castellanii amoebas.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Transparent cells on purple background, digital illustration. — Stock Photo
    Transparent cells on purple background, digital illustration.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Digital illustration of Acanthamoeba castellanii amoebas on white background. — Stock Photo
    Digital illustration of Acanthamoeba castellanii amoebas on white background.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, 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.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    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).
    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    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).
    Fallopian tube, TEM — Stock Photo
    Fallopian tube, TEM
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Fallopian tube cellular structure — Stock Photo
    Fallopian tube cellular structure
    Duct is lined with pseudostratified epithelium — Stock Photo
    Duct is lined with pseudostratified epithelium
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Fallopian tube cellular structure — Stock Photo
    Fallopian tube cellular structure
    Clematis montana pollen — Stock Photo
    Clematis montana pollen
    Angel trumpets pollen — Stock Photo
    Angel trumpets pollen
    Aconite anther and pollen — Stock Photo
    Aconite anther and pollen
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Daffodil pollen structure and shape — Stock Photo
    Daffodil pollen structure and shape
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Secondary follicles in an ovary — Stock Photo
    Secondary follicles in an ovary
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Alstroemeria anther and pollen — Stock Photo
    Alstroemeria anther and pollen
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Abutilon pollen grain — Stock Photo
    Abutilon pollen grain
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Secondary follicles in an ovary — Stock Photo
    Secondary follicles in an ovary