I think the answer you're looking for is Carbohydrate
Answer:
Explanation but if im wrong correct me
The role of 3tc in inhibiting hiv reproduction is to interfere with enzyme trancriptase since it has a similar shape to the c nucleotide of DNA.Reverse trancriptase pick up 3tc molecule which led to termination of DNa further thus block reproduction of HIV.
D after exposure all the reproduction cells have mutated to become resistant for the next gen
