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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
    Dividing bacteria on tissue surface — Stock Photo
    Dividing bacteria on tissue surface
    Abstract fungi releasing allergic spores, 3d digital illustration. — Stock Photo
    Abstract fungi releasing allergic spores, 3d digital illustration.
    Male reproductive system — Stock Photo
    Male reproductive system
    Organs comprising male reproductive system — Stock Photo
    Organs comprising male reproductive system
    Illustration of human sperm on black background. — Stock Photo
    Illustration of human sperm on black background.
    View of Fetus at 34 weeks — Stock Photo
    View of Fetus at 34 weeks
    Molecular model of follicle-stimulating hormone. — Stock Photo
    Molecular model of follicle-stimulating hormone.
    Fungus releasing spores, computer illustration — Stock Photo
    Fungus releasing spores, computer illustration
    Human Fertilisation, computer illustration — Stock Photo
    Human Fertilisation, computer illustration
    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 9, computer illustration. — Stock Photo
    Human fetus developing at week 9, computer illustration.
    Human fetus developing at week 36, computer illustration. — Stock Photo
    Human fetus developing at week 36, computer illustration.
    View of Fetus at 39 weeks — Stock Photo
    View of Fetus at 39 weeks
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in Sheridan River (Copper River Delta) tributary 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 Sheridan River (Copper River Delta) tributary stream during autumn; Alaska, United States of America
    Human fetus developing at week 27, computer illustration. — Stock Photo
    Human fetus developing at week 27, computer illustration.
    View of Fetus at 28 weeks — Stock Photo
    View of Fetus at 28 weeks
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Human sperm approaching egg cell, digital illustration. — Stock Photo
    Human sperm approaching egg cell, digital illustration.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Liquid nitrogen pouring into cryostorage canister. — Stock Photo
    Liquid nitrogen pouring into cryostorage canister.
    View of Fetus at 7 weeks — Stock Photo
    View of Fetus at 7 weeks
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration. — Stock Photo
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Penicillium fungus, Computer illustration — Stock Photo
    Penicillium fungus, Computer illustration
    View of fetus at 23 weeks — Stock Photo
    View of fetus at 23 weeks
    View of Fetus at 21 weeks — Stock Photo
    View of Fetus at 21 weeks
    Side view of female doctor in blue uniform and sterile mask examining smiling patient on gynecological chair in fertility clinic — Stock Photo
    Side view of female doctor in blue uniform and sterile mask examining smiling patient on gynecological chair in fertility clinic
    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.
    View of Foetus at 32 weeks — Stock Photo
    View of Foetus at 32 weeks
    Penicillium fungus, Computer illustration — Stock Photo
    Penicillium fungus, Computer illustration
    Illustration of blue silhouette of obese woman with highlighted uterus. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted uterus.
    Human fetus developing at week 12, computer illustration. — Stock Photo
    Human fetus developing at week 12, computer 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
    Mating mandarinfish with eggs — Stock Photo
    Mating mandarinfish with eggs
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Medical illustration of fetus development — Stock Photo
    Medical illustration of fetus development
    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
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman pointing at the screen in hospital — Stock Photo
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman pointing at the screen in hospital
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Kingella kingae bacteria, computer illustration. K. kingae is a Gram-negative coccobacillus that is part of the normal flora of children's throats. It can occasionally cause invasive disease, primarily osteomyelitis (bone infection) — Stock Photo
    Kingella kingae bacteria, computer illustration. K. kingae is a Gram-negative coccobacillus that is part of the normal flora of children's throats. It can occasionally cause invasive disease, primarily osteomyelitis (bone infection)
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    3d illustration of red transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of red transparent sperm cells swimming towards egg cell.
    Human fetus developing at week 25, computer illustration. — Stock Photo
    Human fetus developing at week 25, computer illustration.
    Close-up illustration of colored pollen grain of mimosa plant. — Stock Photo
    Close-up illustration of colored pollen grain of mimosa plant.
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration. — Stock Photo
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration.
    View of Fetus at 24 weeks — Stock Photo
    View of Fetus at 24 weeks
    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.
    Alstroemeria anther and pollen — Stock Photo
    Alstroemeria anther and pollen
    Male sex cell — Stock Photo
    Male sex cell
    Illustration of human foetus on week 13 term. — Stock Photo
    Illustration of human foetus on week 13 term.
    3d illustration of broken or defective orange colored x and y chromosomes. — Stock Photo
    3d illustration of broken or defective orange colored x and y chromosomes.
    Ceylon nudibranchs mating on sandy bottom — Stock Photo
    Ceylon nudibranchs mating on sandy bottom
    Pregnant woman meditating outdoors — Stock Photo
    Pregnant woman meditating outdoors
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    3d illustration of transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of transparent sperm cells swimming towards egg cell.
    Digital 3d colored illustration of cancer cell in process of mitosis. — Stock Photo
    Digital 3d colored illustration of cancer cell in process of mitosis.
    Pregnant woman stretching on sofa — Stock Photo
    Pregnant woman stretching on sofa