Viscotoxins are small proteins that are toxic against a varied number of cell types. They belong to plant thionins, and are produced from the leaves and stems of the European mistletoe (Viscum album). ...
A class of phytotoxins that have a hypotensive activity and slow the heart beat. ... (05 Mar 2000) ... 
Type: Term Pronunciation: vis′kō-toks′ins Definitions: 1. A class of phytotoxins that have a hypotensive activity and slow the heart beat.