Figure 1.
Disulfide-linked three-leafed structures of the prototypic trefoil factor family peptides TFF1 and TFF2. Cysteine residues (C) are shown in green (numbering in Roman numerals).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.