脊椎动物
发表于 2025-3-30 11:39:55
https://doi.org/10.1057/9781137385499e B cells form the central mass of the islets, accounting for at least 65% in the rat. F cells replace A cells in islets situated close to the duodenum (Orci, 1976a); these islets are particularly rich in polypeptide-containing cells and poor in glucagon-containing cells.