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    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
    Illustration of human foetus on week 8 on black background. — Stock Photo
    Illustration of human foetus on week 8 on black background.
    Human fetus developing at week 12, computer illustration. — Stock Photo
    Human fetus developing at week 12, computer illustration.
    Cells dividing, computer illustration — Stock Photo
    Cells dividing, computer illustration
    Liquid nitrogen pouring into cryostorage canister. — Stock Photo
    Liquid nitrogen pouring into cryostorage canister.
    Illustration of silhouette of pregnant woman and 10 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 10 week foetus.
    Full-term fetus — Stock Photo
    Full-term fetus
    Seals mating on beach — Stock Photo
    Seals mating on beach
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Computer illustration of unicellular fungus (yeast) Candida auris — Stock Photo
    Computer illustration of unicellular fungus (yeast) Candida auris
    Pregnant woman exercising at park — Stock Photo
    Pregnant woman exercising at park
    Male sex cell — Stock Photo
    Male sex cell
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) false spawning melee in an Alaskan stream during autumn; Alaska, United States of America — Stock Photo
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) false spawning melee in an Alaskan stream during autumn; Alaska, United States of America
    Abstract female body with visible uterus, digital illustration. — Stock Photo
    Abstract female body with visible uterus, digital illustration.
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells.
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells.
    View of Fetus at 34 weeks — Stock Photo
    View of Fetus at 34 weeks
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    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.
    Human fetus developing at week 6, computer illustration. — Stock Photo
    Human fetus developing at week 6, computer illustration.
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation — Stock Photo
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation
    Dust mites on cotton strands — Stock Photo
    Dust mites on cotton strands
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Cropped image of Pregnant woman holding respiratory for asthma — Stock Photo
    Cropped image of Pregnant woman holding respiratory for asthma
    Abstract pollen grains from various plants differ in size and shape, computer illustration. — Stock Photo
    Abstract pollen grains from various plants differ in size and shape, computer illustration.
    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
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation — Stock Photo
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation
    Organs of reproductive system — Stock Photo
    Organs of reproductive system
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Illustration of silhouette of pregnant woman and 7 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 7 week foetus.
    Pregnant woman with hands on tummy — Stock Photo
    Pregnant woman with hands on tummy
    Fungi releasing allergic spores, 3d digital illustration. — Stock Photo
    Fungi releasing allergic spores, 3d digital illustration.
    Illustration of human foetus on week 27 term. — Stock Photo
    Illustration of human foetus on week 27 term.
    Queen bee cones in honeycomb — Stock Photo
    Queen bee cones in honeycomb
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Human sperm cells — Stock Photo
    Human sperm cells
    Transparent sperm cells moving towards round blue coloured egg cell. — Stock Photo
    Transparent sperm cells moving towards round blue coloured egg cell.
    Parasites attacking sperm cell, conceptual illustration. — Stock Photo
    Parasites attacking sperm cell, conceptual illustration.
    Fertilization of healthy human egg — Stock Photo
    Fertilization of healthy human egg
    Human fetus developing at week 15, computer illustration. — Stock Photo
    Human fetus developing at week 15, computer illustration.
    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.
    View of Fetus at 26 weeks — Stock Photo
    View of Fetus at 26 weeks
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    Human sperm cells — Stock Photo
    Human sperm cells
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti. — Stock Photo
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti.
    Cryonic preservation of sperm, conceptual digital illustration. — Stock Photo
    Cryonic preservation of sperm, conceptual digital illustration.
    3d illustration of human sperm cells in reproductive process. — Stock Photo
    3d illustration of human sperm cells in reproductive process.
    View of Fetus at 17 weeks — Stock Photo
    View of Fetus at 17 weeks
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Penicillium fungus, Computer illustration — Stock Photo
    Penicillium fungus, Computer illustration
    Human fetus developing at week 16, computer illustration. — Stock Photo
    Human fetus developing at week 16, computer illustration.
    Illustration of human foetus on week 13 term. — Stock Photo
    Illustration of human foetus on week 13 term.