PEPTIDES RELATED TO INSULIN-LIKE GROWTH FACTOR 1 AND 2 IN THE GASTRO-ENTERO-PANCREATIC SYSTEM OF LOWER VERTEBRATES

摘要

Immunohistochemical investigations indicate a straight forward evolution of insulin- and IGF-like peptides that leads from a common ancestor hormone in protochordates to the divergence of insulin and IGF-like peptides in lower vertebrates.