Traitors/rivals to the Imperial Throne of Ay, the House of Lazarus was marked with a Curse Brand, so that every oldest heir would be identified and shamed to the world. The mark consists of a map, which actually leads to a very special place.
This is the chemical structure of adrenaline. It symbolizes how much of every single day I have it running through my blood. I love the feeling of the adrenaline rush. And being a biology major and dealing with chem thus is perfect!