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    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Illustration of red human embryo on black background at pregnancy stage of week 25. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 25.
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Four-cell embryo — Stock Photo
    Four-cell embryo
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Candida albicans infected medical catheter — Stock Photo
    Candida albicans infected medical catheter
    Test tubes and baby pacifiers on plain background. — Stock Photo
    Test tubes and baby pacifiers on plain background.
    Illustration of sperm fertilizing human egg cell. — Stock Photo
    Illustration of sperm fertilizing human egg cell.
    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
    View of Fetus at 33 weeks — Stock Photo
    View of Fetus at 33 weeks
    Normal sperm cells — Stock Photo
    Normal sperm cells
    Human Fertilisation, computer illustration — Stock Photo
    Human Fertilisation, computer illustration
    Fertilization showing sperm fertilizing an egg — Stock Photo
    Fertilization showing sperm fertilizing an egg
    Abstract female body with visible uterus, digital illustration. — Stock Photo
    Abstract female body with visible uterus, digital illustration.
    Human embryonic stem cell, digital illustration. — Stock Photo
    Human embryonic stem cell, digital illustration.
    View of fetus at 39 weeks — Stock Photo
    View of fetus at 39 weeks
    View of Fetus at 5 weeks — Stock Photo
    View of Fetus at 5 weeks
    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
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Illustration of human foetus on week 26 term. — Stock Photo
    Illustration of human foetus on week 26 term.
    Digital illustration of yeast and hyphae stages of Candida albicans fungus. — Stock Photo
    Digital illustration of yeast and hyphae stages of Candida albicans fungus.
    Colored scanning electron micrograph of pollen grains from marigold flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from marigold flower.
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Pregnant woman sitting on an exercise ball — Stock Photo
    Pregnant woman sitting on an exercise ball
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization. — Stock Photo
    Human egg cell surrounded by numerous spermatozoa, digital illustration of fertilization.
    Human fetus developing at week 30, computer illustration. — Stock Photo
    Human fetus developing at week 30, computer illustration.
    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 fetus developing at week 26, computer illustration. — Stock Photo
    Human fetus developing at week 26, computer illustration.
    Organs of reproductive system — Stock Photo
    Organs of reproductive system
    Illustration of human foetus on week 9 on white background. — Stock Photo
    Illustration of human foetus on week 9 on white background.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Semi-dressed pregnant woman — Stock Photo
    Semi-dressed pregnant woman
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Male and female baboons copulating on wet meadow during overcast day in Africa — Stock Photo
    Male and female baboons copulating on wet meadow during overcast day in Africa
    Pollen grains from different plants, computer illustration — Stock Photo
    Pollen grains from different plants, computer illustration
    Mating gymnosoma flies mating on wild plant. — Stock Photo
    Mating gymnosoma flies mating on wild plant.
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    3d illustration of broken or defective white colored x and y chromosomes. — Stock Photo
    3d illustration of broken or defective white colored x and y chromosomes.
    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).
    Four-cell embryo — Stock Photo
    Four-cell embryo
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Shape of pollen grains — Stock Photo
    Shape of pollen grains
    Broadbean pollen grain — Stock Photo
    Broadbean pollen grain
    Illustration of red human embryo on black background at pregnancy stage of week 21. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 21.
    Pregnant woman stretching — Stock Photo
    Pregnant woman stretching
    Abstract female body with visible uterus, digital illustration. — Stock Photo
    Abstract female body with visible uterus, digital illustration.
    Illustration of female silhouette with highlighted uterus cancer. — Stock Photo
    Illustration of female silhouette with highlighted uterus cancer.
    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.
    Illustration of red human embryo on black background at pregnancy stage of week 35. — Stock Photo
    Illustration of red human embryo on black background at pregnancy stage of week 35.
    Human sperm cells — Stock Photo
    Human sperm cells
    Human sperm cells — Stock Photo
    Human sperm cells
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Pregnant woman stretching — Stock Photo
    Pregnant woman stretching
    View of Fetus at 7 weeks — Stock Photo
    View of Fetus at 7 weeks
    Illustration of human foetus on week 18 term. — Stock Photo
    Illustration of human foetus on week 18 term.
    View of Fetus at 7 weeks — Stock Photo
    View of Fetus at 7 weeks
    Full-term fetus — Stock Photo
    Full-term fetus
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration