User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4502434-20120608024057/@comment-72.136.163.92-20120611182258

In concluding, the dragon element is made out of elder dragon blood. And elder dragon blood is like a virus that will have different effects on different monsters. While some are immune to it, some take less/more damage. WELL, it does not have to be a virus. It can be like how blood type A wont accept blood type B when injected to the body.