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 antiserum on PTTH activity in the in vitro assay. (A) Dose-dependent effect of the purified 45-kDa PTTH on ecdysone secretion by the ring glands in vitro. Each datum point represents the mean (±SEM) of four separate determinations. (B) Inhibition of the activity of purified PTTH by the anti-PTTH antiserum. Various doses of anti-PTTH anti-serum and purified PTTH (0.5 μg) were incubated together and the mixture was then assayed using the ring gland in vitro assay as in A.
