None. The human body can not produce B12. It has to get it from food.
Glands
Pancreas
The pituitary gland is located at the base of the skull and it produces the body's hormones.
The testes, or testicals, produce sperm cells.
The liver produces bile, which is then stored in the gallbladder.
pancreas
Thyroid
The liver and the kidneys, colon.
some were in your body
Your bladder produces about 1.5 litres of urine per day.
in fact each and every cell of our body produces enzymes to be able to perform its functions.
Pancreas
Glands
The pancreas is the main digestive enzyme-producing organ in the body.
a organ that produces a hormone which speeds up your body processes
The organ that produces estrogen is the ovary.
The pituitary gland is located at the base of the skull and it produces the body's hormones.