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    Three Horses Grazing — Stock Photo
    Three Horses Grazing
    Human heart and circulatory system, illustration. — Stock Photo
    Human heart and circulatory system, illustration.
    Light micrograph of human testis showing spermatogonia, spermatocytes in meiosis, spermatids, and spermatozoa. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of human testis showing spermatogonia, spermatocytes in meiosis, spermatids, and spermatozoa. Haematoxylin and eosin stain.
    Digital illustration of silhouette with liver inflammation and close-up of hepatitis E virus. — Stock Photo
    Digital illustration of silhouette with liver inflammation and close-up of hepatitis E virus.
    Bartonella quintana bacteria, digital illustration. — Stock Photo
    Bartonella quintana bacteria, digital illustration.
    Veiled chameleon on tree branch — Stock Photo
    Veiled chameleon on tree branch
    Illustration of human heart anatomy on white background. — Stock Photo
    Illustration of human heart anatomy on white background.
    View of mountain field — Stock Photo
    View of mountain field
    Man doing kettlebell workout, computer illustration. — Stock Photo
    Man doing kettlebell workout, computer illustration.
    Soft coral colonies growing on reef — Stock Photo
    Soft coral colonies growing on reef
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease — Stock Photo
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease
    Visible ureter in abstract female body, computer illustration. — Stock Photo
    Visible ureter in abstract female body, computer illustration.
    Realistic human heart and blood vessels on black background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on black background, digital illustration.
    Human head musculature — Stock Photo
    Human head musculature
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Illustration of female silhouette with highlighted rectum. — Stock Photo
    Illustration of female silhouette with highlighted rectum.
    Person hand holding petri dish with biological culture. — Stock Photo
    Person hand holding petri dish with biological culture.
    Illustration of knee bones in human skeleton on white background. — Stock Photo
    Illustration of knee bones in human skeleton on white background.
    Female chemist using equipment in pharmaceutical laboratory. — Stock Photo
    Female chemist using equipment in pharmaceutical laboratory.
    Female silhouette with wrist pain, digital illustration. — Stock Photo
    Female silhouette with wrist pain, digital illustration.
    Light micrograph of a cross section of xylem. The xylem is a type of tissue in vascular plants that transports water and some nutrients. — Stock Photo
    Light micrograph of a cross section of xylem. The xylem is a type of tissue in vascular plants that transports water and some nutrients.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Peregrine Falcon against blue sky — Stock Photo
    Peregrine Falcon against blue sky
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Scientist injecting tomato with syringe with red liquid, conceptual image. — Stock Photo
    Scientist injecting tomato with syringe with red liquid, conceptual image.
    Illustration of senior woman silhouette with colored adrenal glands on black background. — Stock Photo
    Illustration of senior woman silhouette with colored adrenal glands on black background.
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Human jaw bone structure — Stock Photo
    Human jaw bone structure
    Nerves of human pelvis, computer illustration. — Stock Photo
    Nerves of human pelvis, computer illustration.
    Antarctic fur seal (Arctocephalus gazella) on rocky coast — Stock Photo
    Antarctic fur seal (Arctocephalus gazella) on rocky coast
    Close-up of dagger fly on plantago lanceolata plant. — Stock Photo
    Close-up of dagger fly on plantago lanceolata plant.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Indonesia, Kalimantan, Borneo, Kotawaringin Barat, Tanjung Puting National Park, Orangutan with cub (Pongo pygmaeus), hanging on trees — Stock Photo
    Indonesia, Kalimantan, Borneo, Kotawaringin Barat, Tanjung Puting National Park, Orangutan with cub (Pongo pygmaeus), hanging on trees
    Digital illustration of nerve neurons cells. — Stock Photo
    Digital illustration of nerve neurons cells.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Navicular bone detailed in human body, computer illustration. — Stock Photo
    Navicular bone detailed in human body, computer illustration.
    Abstract male figure with detailed Rhomboid minor muscle, computer illustration. — Stock Photo
    Abstract male figure with detailed Rhomboid minor muscle, computer illustration.
    Soft corals thriving on deep reef — Stock Photo
    Soft corals thriving on deep reef
    Gene editing, conceptual digital illustration. — Stock Photo
    Gene editing, conceptual digital illustration.
    Adult head louse — Stock Photo
    Adult head louse
    Skull and helmet, X-ray. — Stock Photo
    Skull and helmet, X-ray.
    Realistic human fetus at week 39, computer illustration. — Stock Photo
    Realistic human fetus at week 39, computer illustration.
    Vibrant soft coral colonies on reef in Lembeh Strait, Indonesia — Stock Photo
    Vibrant soft coral colonies on reef in Lembeh Strait, Indonesia
    Male anatomy showing Levator anguli oris muscle, computer illustration. — Stock Photo
    Male anatomy showing Levator anguli oris muscle, computer illustration.
    Normal child head. X-ray of the head of a 13 year old. — Stock Photo
    Normal child head. X-ray of the head of a 13 year old.
    Anatomy of throat of woman, digital illustration. — Stock Photo
    Anatomy of throat of woman, digital illustration.
    Squirrelfish closeup shot — Stock Photo
    Squirrelfish closeup shot
    Tibia bone in skeleton of human body, computer illustration. — Stock Photo
    Tibia bone in skeleton of human body, computer illustration.
    Cute monkey sitting on stone in pond — Stock Photo
    Cute monkey sitting on stone in pond
    Illustration of human knee anatomy on white background. — Stock Photo
    Illustration of human knee anatomy on white background.
    Human brain cross-section — Stock Photo
    Human brain cross-section
    Blood vessels of foot, computer illustration — Stock Photo
    Blood vessels of foot, computer illustration
    Honeybee swarm working on honeycomb — Stock Photo
    Honeybee swarm working on honeycomb
    Illustration of senior woman silhouette showing bladder on black background. — Stock Photo
    Illustration of senior woman silhouette showing bladder on black background.
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar. — Stock Photo
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar.