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    3d illustration of cryopreserved foetus frozen into ice cube. — Stock Photo
    3d illustration of cryopreserved foetus frozen into ice cube.
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration. — Stock Photo
    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration.
    France, Burgundy, Yonne. Area of Saint Fargeau and Boutissaint. Period of slab. Stag hidden under wood. — Stock Photo
    France, Burgundy, Yonne. Area of Saint Fargeau and Boutissaint. Period of slab. Stag hidden under wood.
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    View of Fetus at 19 weeks — Stock Photo
    View of Fetus at 19 weeks
    Illustration of red human embryo on black background at pregnancy stage of week 29. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 29.
    Illustration of human foetus on week 30 term. — Stock Photo
    Illustration of human foetus on week 30 term.
    Illustration of human foetus on week 11 term. — Stock Photo
    Illustration of human foetus on week 11 term.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Human fetus developing at week 28, computer illustration. — Stock Photo
    Human fetus developing at week 28, computer illustration.
    Molecular model of follicle-stimulating hormone. — Stock Photo
    Molecular model of follicle-stimulating hormone.
    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Organs of reproductive system — Stock Photo
    Organs of reproductive system
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    View of fetus at 39 weeks — Stock Photo
    View of fetus at 39 weeks
    Mountain bluebirds mating on wire, close-up — Stock Photo
    Mountain bluebirds mating on wire, close-up
    Two month old fetus — Stock Photo
    Two month old fetus
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Illustration of silhouette of pregnant woman with visible uterus and 4 cell stage embryo. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and 4 cell stage embryo.
    Illustration of 4 cell stage egg on black background. — Stock Photo
    Illustration of 4 cell stage egg on black background.
    Human fetus developing at week 4, computer illustration. — Stock Photo
    Human fetus developing at week 4, computer illustration.
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    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)
    Illustration of human silhouette with inflamed uterus. — Stock Photo
    Illustration of human silhouette with inflamed uterus.
    Digital artwork of unicellular yeast fungus Candida auris. — Stock Photo
    Digital artwork of unicellular yeast fungus Candida auris.
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    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
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Illustration of blue silhouette of obese woman with highlighted uterus on white background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted uterus on white background.
    Pregnant woman and 6 week embryo — Stock Photo
    Pregnant woman and 6 week embryo
    Fertilization of healthy human egg — Stock Photo
    Fertilization of healthy human egg
    Prostate tissue showing Iadenocarcinoma — Stock Photo
    Prostate tissue showing Iadenocarcinoma
    Illustration of overweight woman with visible uterus on black background. — Stock Photo
    Illustration of overweight woman with visible uterus on black background.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Close-up of mating six spot burnet moths on common thistle flower. — Stock Photo
    Close-up of mating six spot burnet moths on common thistle flower.
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    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)
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Close-up illustration of pollen grain of mimosa and mimosa flowers. — Stock Photo
    Close-up illustration of pollen grain of mimosa and mimosa flowers.
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Female scientist looking in microscope in in vitro fertilisation laboratory. — Stock Photo
    Female scientist looking in microscope in in vitro fertilisation laboratory.
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaska stream during the autumn; Alaska, United States of America — Stock Photo
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaska stream during the autumn; Alaska, United States of America
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaska stream during the autumn; Alaska, United States of America — Stock Photo
    Coho Salmon, also known as Silver Salmon (Oncorhynchus kisutch) in the act of spawning in an Alaska stream during the autumn; Alaska, United States of America
    Human fetus developing at week 13, computer illustration. — Stock Photo
    Human fetus developing at week 13, computer illustration.
    Human fetus developing at week 23, computer illustration. — Stock Photo
    Human fetus developing at week 23, computer illustration.
    3d digital illustration of unicellular yeast fungus Candida auris. — Stock Photo
    3d digital illustration of unicellular yeast fungus Candida auris.
    Human egg cell — Stock Photo
    Human egg cell
    Pregnant woman stretching — Stock Photo
    Pregnant woman stretching
    Coloured scanning electron micrograph (SEM) of Mould, hyphae, conidiophores (fruiting structures) and conidium (asexual spore) formation (Penicillium sp.;likely Penicillum candidum). — Stock Photo
    Coloured scanning electron micrograph (SEM) of Mould, hyphae, conidiophores (fruiting structures) and conidium (asexual spore) formation (Penicillium sp.;likely Penicillum candidum).
    Illustration of human foetus on week 6 on blue background. — Stock Photo
    Illustration of human foetus on week 6 on blue background.
    Sperm cells, abstract digital illustration. — Stock Photo
    Sperm cells, abstract digital illustration.
    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.
    Human embryo cell, digital illustration. — Stock Photo
    Human embryo cell, digital illustration.
    View of Full-term fetus — Stock Photo
    View of Full-term fetus
    Human fetus developing at week 19, computer illustration. — Stock Photo
    Human fetus developing at week 19, computer illustration.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration