Nearby USPS - Postal Service Locations. 1  225 S Van Rensselaer St, Rensselaer (0.1 mi) 2  120 W Harrison St, Rensselaer (0.1 mi) 3  200 W Washington St, Rensselaer (0.2 mi)
Production of red blood cells is controlled by erythropoietin, a hormone produced primarily by the kidneys. Red blood cells start as immature cells in the bone marrow and after approximately seven days of maturation are released into the bloodstream.lood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: 1  transporting oxygen and nutrients to the lungs and tissues.
The red blood cells The red blood cells or erythrocytes are formed in the bone marrow by the process of erythropoeisis. Stem cells, under the influence of erythropoietin, develop into erythroblasts, at which point they start to synthesise haemoglobin.