Fig. 19. (a) Symplostatin 4 precursor probe 63. (b) E64-inspired protease probe 64.114 .
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.