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    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
    Sperm cells, abstract digital illustration. — Stock Photo
    Sperm cells, abstract digital illustration.
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaskan stream during autumn; Alaska, United States of America — Stock Photo
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaskan stream during autumn; Alaska, United States of America
    Human papilloma virus — Stock Photo
    Human papilloma virus
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Coloured scanning electron micrograph (SEM) of a wood anemone (Anemone nemerosa) anther (male reproductive part) covered in pollen. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a wood anemone (Anemone nemerosa) anther (male reproductive part) covered in pollen.
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Sperm cells, abstract digital illustration. — Stock Photo
    Sperm cells, abstract digital illustration.
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Sperm cell, or spermatozoa — Stock Photo
    Sperm cell, or spermatozoa
    Dolly Varden (southern form; Salvelinus malma lordi) male crosses over a female as part of courtship in an Alaskan stream during autumn; Alaska, United States of America — Stock Photo
    Dolly Varden (southern form; Salvelinus malma lordi) male crosses over a female as part of courtship in an Alaskan stream during autumn; Alaska, United States of America
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Mountain bluebirds mating on wire, close-up — Stock Photo
    Mountain bluebirds mating on wire, close-up
    Sperm fertilising an egg — Stock Photo
    Sperm fertilising an egg
    Antelope buck in a grass field during rut; South Dakota, United States of America — Stock Photo
    Antelope buck in a grass field during rut; South Dakota, United States of America
    Three dimensional medical illustration of male reproductive system with veins and arteries — Stock Photo
    Three dimensional medical illustration of male reproductive system with veins and arteries
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Sperm cell in a fallopian tube — Stock Photo
    Sperm cell in a fallopian tube
    Human sperm cells, abstract computer illustration. — Stock Photo
    Human sperm cells, abstract computer illustration.
    Close-up illustration of pollen grain of mimosa and mimosa flowers. — Stock Photo
    Close-up illustration of pollen grain of mimosa and mimosa flowers.
    Sperm fertilizing an egg cell — Stock Photo
    Sperm fertilizing an egg cell
    Male Bluegill Triggerfish (Xanthichthys auromarginatus) with an erect spinous dorsal fin photographed under water off Maui, Hawaii, USA. He was circling above his prepared spawning area suggesting that this is a courtship display; Maui, Hawaii, Unite — Stock Photo
    Male Bluegill Triggerfish (Xanthichthys auromarginatus) with an erect spinous dorsal fin photographed under water off Maui, Hawaii, USA. He was circling above his prepared spawning area suggesting that this is a courtship display; Maui, Hawaii, Unite
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Organs comprising male reproductive system — Stock Photo
    Organs comprising male reproductive system
    Organs of reproductive system — Stock Photo
    Organs of reproductive system