The venom toxins are coloured according to their respective pharmacological activities, whereby colour intensity indicates the dose-dependent pharmacological actions. On the other hand, different colour distributions within the same toxins correspond to the multiple biological effects exerted by the toxins [90,91]. Of all venom enzymatic toxins, the enzymes LAAO and PLA₂ exhibit cytotoxicity (represented by a yellow colour). Abbreviations: LAAO, l-amino acid oxidase; SVMP, snake venom metalloproteinase; PLA₂, phospholipase A₂; SVSP, snake venoms serine protease; 3FTX, three-finger toxin; DTX, dendrotoxin; CTL, C-type lectin; CRISP, cysteine-rich secretory protein; MTX, myotoxin.