Most people know what hormones are and why they are needed, but only a few people know exactly how the research of hormonal interactions in the human body is done. For obvious reasons, and due to the complexity of these kinds of experiments, they can not be conducted on human beings. That is why, in the second half of the century in most countries, special
research institutes have been set up. Most of the necessary experiments are conducted on animals - rats, rabbits and primates. One of such institutes was called "The USSR Research Institute of Experimental Pathology and Therapy". There are a lot of rumors about the attempt to crossbreed humans and monkeys to create super-soldiers being done in this place.