Significats de know alkaloids en anglès

Oh, we've looked for morphine chloroform, ether, all the ordinary poisons, besides some of the little known alkaloids.

A study of the MS fragmentation patterns of the components permitted the identification of five new minor quinoline alkaloids together with the known alkaloids.

I've looked for all the ordinary known poisons and some of the little- known alkaloids, but, Kennedy, I always get back to the same point.