published on: 2013-06-06 05:26:12
jincow.tumblr.com/post/51938118112/
fuckyeah-chemistry: Can you identify these structures? Neurotransmitters!
jincow.tumblr.com/post/52286116334/
huehuehue
jincow.tumblr.com/post/52549066655/
Couple quick small doodles! Done during summer class, so there