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    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Wildflower meadow along Lost Lake Trail, Resurrection Peaks in the background. Chugach National Forest, Kenai Peninsula, South-central Alaska in summertime; Seward, Alaska, United States of America — Stock Photo
    Wildflower meadow along Lost Lake Trail, Resurrection Peaks in the background. Chugach National Forest, Kenai Peninsula, South-central Alaska in summertime; Seward, Alaska, United States of America
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Young vain man in stylish wear with long nails standing on tiled wall looking at camera — Stock Photo
    Young vain man in stylish wear with long nails standing on tiled wall looking at camera
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM). — Stock Photo
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM).
    Colored angiogram of carotid artery in neck of mature patient. — Stock Photo
    Colored angiogram of carotid artery in neck of mature patient.
    Transparent rear view of human body showing skeleton, kidneys and nervous system — Stock Photo
    Transparent rear view of human body showing skeleton, kidneys and nervous system
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Young vain man in stylish wear with lady's purse standing on tiled wall while looking at camera — Stock Photo
    Young vain man in stylish wear with lady's purse standing on tiled wall while looking at camera
    Green goat willow twigs (Salix caprea), coloured X-ray. — Stock Photo
    Green goat willow twigs (Salix caprea), coloured X-ray.
    Coloured scanning electron micrograph of 293T cell in early stage of programmed apoptosis cell death. — Stock Photo
    Coloured scanning electron micrograph of 293T cell in early stage of programmed apoptosis cell death.
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    Low angle of happy African American woman with dreadlocks and bearded man smiling and brushing false teeth during work in lab — Stock Photo
    Low angle of happy African American woman with dreadlocks and bearded man smiling and brushing false teeth during work in lab
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Portrait of dentist holding set of dentures in clinic — Stock Photo
    Portrait of dentist holding set of dentures in clinic
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    White blood cell — Stock Photo
    White blood cell
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    Components of house dust — Stock Photo
    Components of house dust
    Ankle of patient with osteoarthritis — Stock Photo
    Ankle of patient with osteoarthritis