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.
Effect of size-fractionated Aeromonas Sb supernatant on the ISC value. The <30-kDa fraction was inactive, whereas the <100-kDa fraction elicited the same ISC as the concentrate of the <30-kDa fraction retained by the filter (concentrate). Thus, the active toxin secreted by strain Sb has a molecular mass between 30 and 100 kDa. Control values were obtained with unfiltrated supernatant. Values are means ± the SEM of six monolayers for each fraction.
