Яд змеи и человеческая кровь.

I was doing some research for Cobra parfum by Jeannes Arthes and came across this video about snake venom by mistake - it’s so incredible that I just had to upload it to YouTube. Basically, a single drop of this venom (from a Russell’s viper) is dripped onto a petri dish of blood, and in seconds the blood clots into a thick chunk of solid matter.