Regulation of iron absorption and transport. Iron for use in synthesis of heme, iron-sulfur centers and other non-heme iron proteins is obtained from the diet and via release of recycled iron from macrophages of the reticuloendothelial system that ingest old and damaged erythrocytes (red blood cells).
Four-stroke oil is more like the oil used in cars but both 2-stroke and 4-stroke oil serve the same purpose - to keep the engine lubricated. Four-stroke dirt bike oil comes in a variety of weights like 10w-40, 20w-50 and so on. It is not mixed with gas.
this number provides the recommended psi pounds per square inch for a road bike a standard psi ranges from 80 to 130 mountain bike tires generally require a psi of 30 to 50hybrid tires average 50 to 70 psi types of bike tires to find the correct tire pressure consumers roughly estimate the desirable psi by combining the rider and bike weight and comparing it to the width of the tirehis number provides the recommended psi pounds per square inch for a road bike a standard psi ranges from 80 to 130 mountain bike tires generally require a psi of 30 to 50