User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5043481-20130330104457/@comment-5043481-20130402225947

There are actually many examples of microorganisms in symbiotic relationship that exist nowhere else. For examples, leafcutter ants grow a fungus in thier nests for food, which exists nowhere else on earth. And some larger animals eat thier parents poop at birth to gain the bacteria vital for digesting their food. From this, we can assume that brachydios has some degree of parenting skills, otherwise it could not pass on the mould.

I think that the stuff that expodes is not a mould in itself, rather it is produced by it. Maybe the mould lives inside brachy's shell, and secretes this stuff to the surface.

Either way, there is clearly some extremly complex chemistry going on here, more so than a gaming company would be bothered to research. If they did, capcom would now be a weapon manufacurer.