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Close up of scientists hand holding blood sample on a glass microscope slide for medical testing
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Close up of scientists hands selecting a blood sample for medical testing
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Doctor preparing to view blood sample under microscope in laboratory for medical testing
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A blood sample being held with a row of human samples for analytical testing including blood, urine, chemistry, proteins, anticoagulants and HIV in lab
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Female scientist viewing various human samples for testing in the laboratory
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Scientist viewing various human samples for testing in the laboratory
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Male lion (Panthera leo) with blood on his head and mane after feeding, Maasai Mara National Reserve, Kenya
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Laboratory scientist holding a slide containing a blood sample with a upright compound microscope in the background
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Laboratory scientist holding a blood sample with a upright compound microscope in the background
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A row of human samples for analytical testing including blood, urine, chemistry, proteins, anticoagulants and HIV
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Male polar bear (Ursus maritimus) with a seal prey, Svalbard Archipelago, Barents Sea, Norway, Scandinavia, Europe
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Synthetic Blood. Blood testing. A precision micropipette is used to fill microcentrifuge tubes with blood to be tested. Pipettes are commonly used in chemical and biological laboratory research
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Color coded tube containing synthetic blood sample on a bloodwork requisition form that lists a test for prostate-specific antigen (PSA)
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Male lion (Panthera leo) with blood on his head and mane after feeding, Maasai Mara National Reserve, Kenya
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African lions (Panthera leo) after feeding, Maasai Mara National Reserve, Kenya
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Girl in virtual reality headset interacting with digital floating blood globules
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Close-up of Woman's Hands and Stains on Bandaged Wrists, Studio Shot
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Two cheetah (Acinonyx jubatus) cubs at an African hare kill, Serengeti National Park, Tanzania, East Africa, Africa
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Adult polar bear (Ursus maritimus) on a seal kill in Olgastretet off Barentsoya, Svalbard, Norway, Scandinavia, Europe
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Bullfighters wrestling wounded bull at bullfight in San Miguel de Allende, Mexico
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Male lion (Panthera leo) with blood on his head and mane after feeding, Maasai Mara National Reserve, Kenya
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Bullfighters wrestling wounded bull at bullfight in San Miguel de Allende, Mexico
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Bullfighter on horseback spearing bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Matador and other bullfighters wrestling wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter holding cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Triumphant bullfighter with subdued bull in bullring at bullfight in San Miguel de Allende, Mexico
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Bullfighter waving cape in front of wounded bull in bullring at bullfight in San Miguel de Allende, Mexico
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Radio collared female polar bear (Ursus maritimus) with fresh seal kill on ice in Hinlopen Strait, Svalbard, Norway, Scandinavia, Europe
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Iglesia de Santa Maria de Coronada, Medina Sidonia, Andalucia, Spain, Europe
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Coyote (Canis latrans) feeding on an elk carcass in Rocky Mountain National Park, Colorado, United States of America, North America
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Black-backed jackal (silver-backed jackal) (Canis mesomelas) at a blue wildebeest calf kill, Serengeti National Park, Tanzania, East Africa, Africa
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Cheetah (Acinonyx jubatus) cub with a Thomson's gazelle kill, Serengeti National Park, Tanzania, East Africa, Africa
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Cheetah (Acinonyx jubatus) family at a kill, Serengeti National Park, Tanzania, East Africa, Africa
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