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test or blood sample in a test tube, in the hands of a doctor or laboratory assistant. a medical worker wearing gloves holds a flask of blood in his hands. the concept of health and medicine, the development of a vaccine against coronavirus and diseases. - blood tubes stock pictures, royalty-free photos & images
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a row of human samples for analytical testing including blood, urine, chemistry, proteins,anticoagulants and hiv in lab - blood tubes stock pictures, royalty-free photos & images
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close up of female nurse hands. she takes blood of patient in test tube at hospital. - blood tubes stock pictures, royalty-free photos & images