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    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian protozoa
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Soft coral on Fijian reef — Stock Photo
    Soft coral on Fijian reef
    Closeup of magnified yellow striped eyes on head of exotic fly — Stock Photo
    Closeup of magnified yellow striped eyes on head of exotic fly
    Jeweler wearing headband magnifier working in workshop — Stock Photo
    Jeweler wearing headband magnifier working in workshop
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Chromodoris kuniei nudibranch in Beqa Lagoon — Stock Photo
    Chromodoris kuniei nudibranch in Beqa Lagoon
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom — Stock Photo
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Haversian canals in compact bone, light micrograph. — Stock Photo
    Haversian canals in compact bone, light micrograph.
    Blue cells on black background, digital illustration. — Stock Photo
    Blue cells on black background, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Dust mite on skin surface — Stock Photo
    Dust mite on skin surface
    Side view of orange fluffy flying incest with brown antennae and ornamental large eye — Stock Photo
    Side view of orange fluffy flying incest with brown antennae and ornamental large eye
    Illustration of yellow human egg cell on blue background. — Stock Photo
    Illustration of yellow human egg cell on blue background.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Adenocarcinoma of the thyroid gland — Stock Photo
    Adenocarcinoma of the thyroid gland
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Digital artwork of red cancer cell on tissue surface. — Stock Photo
    Digital artwork of red cancer cell on tissue surface.
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Whip coral goby fish — Stock Photo
    Whip coral goby fish
    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian protozoa
    Closeup of magnified part of black and brown ant with glossy belly and legs — Stock Photo
    Closeup of magnified part of black and brown ant with glossy belly and legs
    Illustration of illuminated cancer cell on black background. — Stock Photo
    Illustration of illuminated cancer cell on black background.
    Medical illustration of diverticulosis in the colon — Stock Photo
    Medical illustration of diverticulosis in the colon
    Spanish dancer nudibranch eggs — Stock Photo
    Spanish dancer nudibranch eggs
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Medical illustration of blastocyst beginning implanting in the wall of the uterus — Stock Photo
    Medical illustration of blastocyst beginning implanting in the wall of the uterus
    Adenocarcinoma of the thyroid gland — Stock Photo
    Adenocarcinoma of the thyroid gland
    Whip coral goby fish — Stock Photo
    Whip coral goby fish
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Female hiker looking through binoculars, Utah, United States — Stock Photo
    Female hiker looking through binoculars, Utah, United States
    Ladybug amphipod closeup shot — Stock Photo
    Ladybug amphipod closeup shot
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background.
    Illustration of blue cancer cell on blue background. — Stock Photo
    Illustration of blue cancer cell on blue background.
    Colorful Risbecia tryoni nudibranchs — Stock Photo
    Colorful Risbecia tryoni nudibranchs
    Binoculars overlooking still lake in rural landscape in Banff, Alberta, Canada — Stock Photo
    Binoculars overlooking still lake in rural landscape in Banff, Alberta, Canada
    Acrospaera radiolarian shell — Stock Photo
    Acrospaera radiolarian shell
    Closeup of magnified part of black and brown ant with glossy head and legs — Stock Photo
    Closeup of magnified part of black and brown ant with glossy head and legs
    Medical illustration of fetus in the womb with labels — Stock Photo
    Medical illustration of fetus in the womb with labels
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Transparent cells on purple background, digital illustration. — Stock Photo
    Transparent cells on purple background, digital illustration.
    Heart strings strings — Stock Photo
    Heart strings strings
    Human blood cells — Stock Photo
    Human blood cells
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Zygote development 24-36 hours after fertilization — Stock Photo
    Zygote development 24-36 hours after fertilization
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.
    Tiny shrimp on starfish in Lembeh Strait, Indonesia — Stock Photo
    Tiny shrimp on starfish in Lembeh Strait, Indonesia
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Conceptual illustration of piece of cake and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of piece of cake and magnification of bacteria of food-borne infection on white background.
    Digital artwork of illuminated red human cancer cell. — Stock Photo
    Digital artwork of illuminated red human cancer cell.
    Chromodoris kuniei nudibranch in Beqa Lagoon — Stock Photo
    Chromodoris kuniei nudibranch in Beqa Lagoon
    Nerve bundle from the sciatic nerve — Stock Photo
    Nerve bundle from the sciatic nerve
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Cup coral polyps under ledge — Stock Photo
    Cup coral polyps under ledge
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Male teacher and girl students conducting scientific experiment at microscope and laptop in laboratory classroom — Stock Photo
    Male teacher and girl students conducting scientific experiment at microscope and laptop in laboratory classroom
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque