Just trying to gather the clues we've got so far?
Peoples Keratin 18 levels raise in a Fibonacci sequence way. (normal=200, then 3, 5, 8, 13, and turned)
At Raydon Labs, where Ink worked, they found Follistatin, Stanozolol, Megace, Aranesp, and Somatropin.
There's a mysterious gas at G0, which (almost) has a color, but Tanya's tests are not showing anything.
Her work with Wendy and the behemoth showed that you change inside as early as stage 1, 300 µg K18/ml blood. The behemoth was filled with (what looks like) tumors.
Little ones seem to prey on the regulars.
Ink's tattoos seem to be made with ballpoint pen ink, which someone found out could contain pheromones that termites like to follow.
...And a lot more I can't think of at the moment... Probably something about Randy too.