+4 = 8 

ㄊㄞˋtài

  1. 有機化合物胺基酸脫水羧基兩性化合物分子大小胺基酸蛋白質

peptide (two or more amino acids linked by peptide bonds CO-NH)​
peptide
Peptid <Biochem&gt (S, Chem)​