The main components are: ( 1 pressure) cylinder, also called working cylinder (7) 2  piston (4) connected to a piston rod (5) 3  floating piston, also called separating piston (2) 4  piston rod guide (6) 5  upper and lower attachment.
Vitamin B12 is a nutrient that helps keep the body's nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak. Two steps are required for the body to absorb vitamin B12 from food.
Along with other B vitamins, vitamin B12 is important for converting the food you eat into cellular energy.â  Vitamin B12 is also important for proper red blood cell formation and normal function of the nervous system.â  Vitamin B12 supplements may be important for vegetarians and vegans who avoid dietary sources rich in vitamin B12.â .