2d
anabolic
androgen
androstenolone
atom
atomic
bio
biochemistry
biology
chain
chemical
chemistry
composition
cure
cyclic
diet
doping
drug
fatty
food
formula
hormone
illustration
isolated
lipid
lipophilic
male
medical
medicine
metabolism
model
molecular
molecule
organic
prescription
progesterone
prostate
research
science
scientific
sex
steroid
sterol
structural
structure
substance
testosterone
white