Conceptual Image Of A Blood Vessel Postcard

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cardiovascular system blood cells medium group of objects artery abundance molecular biology blood flow blood vessels cell biology microbiology abstract hemoglobin medicine anatomy erythrocyte cross section hematology circulation human body detail motion red blood cells color image blood haematid red cells bloodstream close-up no people science magnification digitally generated image cutaway view cytology illustration cell biomedical illustrations medical biochemistry biology artwork