必需胺基酸- 維基百科，自由的百科全書 - Wikipedia 必需胺基酸，指只存在食物中，動物無法合成，只能由食物中攝取，則這些胺基酸被稱 為必需胺基酸。動物需攝取必需胺基酸 ...
Amino Acids Most textbooks will tell you that there are 20 amino acids. ... another important amino acid, is never classified among the major 20 and is a minor amino ... The 40,000 different kinds of protein in the human body are made up of 20 amino acids.
