Arjuna gained knowledge of microbiology

Your studying goes really well. You don't even get sidetracked or anything when you read a bit about how mitochondria might've once been their own single-cellular organisms or the discovery that a human being is not, in truth, a single entity but a cooperation of a macro-organism in a symbiotic relationship with colonies of micro-organisms.

Studying the human body terms of its DNA, viruses and their own RNA, and how the two interact goes really interestingly as well and you're on your way to gaining a solid grounding in advanced genetics research as well. Reading about all this even gives you some ideas about things you could do, such as...maybe using a specially designed virus as a delivery system throughout your body to institute total genetic changes? Or maybe just skip the middle man entirely and use Alteration, lots of Structural Analysis, and careful studying to design your own genome to suit your desires.

(Human Cellular Biology upgraded to Microbiology and Genetics! Microbiology and Genetic advanced to Bachelor's Degree!)