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.
Variation of potency of bistrimethylammonium compounds, with varying length of polymethylene chain, and of d-tubocurarine chloride, among different species. Abscissa: number of carbon atoms in chain. Ordinate: dose in mg./kg. (Extrapolation of the curves beyond C12 to C18 has not been attempted.)
