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.
125cc Dirt Bikes, 125cc Dirt Bike, 125cc Pit Bikes, 125cc Pit Bike. Welcome to our 125cc dirt bike and 125cc pit bike section! You will find the latest models of 125cc dirt bikes and 125cc pit bikes here. Our 125cc dirt bikes and 125cc pit bikes are of the highest quality in the market.