microscopic view of red blood cells flowing through a vein

blood cell vein microscopic view red flow erythrocyte vessel circulation venous capillary hematocrit microanatomy pathology indicator microscopy venule composition dynamic oxygen fluid platelet microcirculation medical hemoglobin vascular component cellular hemodynamic lifespan hematology examination interaction network anemia study morphology plasma disorder biology angiogenesis evaluation function delivery laboratory erythropoiesis cells flowing generative