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    Human sperm cells, abstract computer illustration. — Stock Photo
    Human sperm cells, abstract computer illustration.
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Illustration of silhouette of pregnant woman with visible uterus and fertilized egg cell. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and fertilized egg cell.
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Human sperm cells — Stock Photo
    Human sperm cells
    Male sex cell — Stock Photo
    Male sex cell
    Magnified digital illustration of fertilisation of egg cell. — Stock Photo
    Magnified digital illustration of fertilisation of egg cell.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Immature dog sperm — Stock Photo
    Immature dog sperm
    German chamomile flower pollen grain — Stock Photo
    German chamomile flower pollen grain
    Marsh marigold carpel — Stock Photo
    Marsh marigold carpel
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    3d illustration of sperm cell frozen into ice cube. — Stock Photo
    3d illustration of sperm cell frozen into ice cube.
    Human embryonic stem cells in Petri dish, digital illustration. — Stock Photo
    Human embryonic stem cells in Petri dish, digital illustration.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Magnified digital illustration of 8 cell stage embryo. — Stock Photo
    Magnified digital illustration of 8 cell stage embryo.
    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    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).
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Female reproductive system — Stock Photo
    Female reproductive system
    3d illustration of in vitro fertilization of egg cell. — Stock Photo
    3d illustration of in vitro fertilization of egg cell.
    Human sperm cells — Stock Photo
    Human sperm cells
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Human x chromosomes — Stock Photo
    Human x chromosomes
    In vitro fertilisation process — Stock Photo
    In vitro fertilisation process
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    Illustration of silhouette of pregnant woman with visible uterus and 2 cell stage embryo. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and 2 cell stage embryo.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Sperm cells, abstract digital illustration. — Stock Photo
    Sperm cells, abstract digital illustration.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Blastocyst structure, conceptual computer artwork. — Stock Photo
    Blastocyst structure, conceptual computer artwork.
    Meiotic cell division — Stock Photo
    Meiotic cell division
    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.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Human sperm cells — Stock Photo
    Human sperm cells
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    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
    3d illustration of egg cell frozen into ice cube. — Stock Photo
    3d illustration of egg cell frozen into ice cube.
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    Human sperm cells, abstract computer illustration. — Stock Photo
    Human sperm cells, abstract computer illustration.
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    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.
    Illustration of human egg cell dividing on blue background. — Stock Photo
    Illustration of human egg cell dividing on blue background.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Human embryonic stem cells in Petri dish, digital illustration. — Stock Photo
    Human embryonic stem cells in Petri dish, digital illustration.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells