microscopic view of red blood cells flowing through a vein. the image is a close-up of the cells in a liquid environment

red blood cell microscopic view flow vein close liquid hematology endothelial microcirculation laboratory biomedicine oxygen transport circulation disorder hemoglobin volumetric vascular property perfusion healthcare microscopy leukemia thrombus clinical diagnostic hematocrit environment arterial capillary culture venous venipuncture sickle hematoma transfusion serum biochemistry physiology pathology component viscosity cellular anatomy leukocyte erythropoiesis cells flowing closeup generative