These concept articles ( Schild regression, Ligand (biochemistry)) do are not linked with this and one has been tagged as inaccurate. I am not an expert in pharmacology, even though I did try and fix the leggibility of these two articles so time ago, I think. -- Squidonius ( talk) 14:20, 29 April 2008 (UTC) reply
PS: There is confusion with Small molecules and protein/glycoprotein in several articles, but the nearest article to "small molecule" is drug. which should be fixed -- Squidonius ( talk) 14:23, 29 April 2008 (UTC) reply