The State Food and Medication Administration also said it is working to restore its reputation after its previous head was executed this summer on charges he got bribes to approve untested medications. Within a crackdown on violations by pharmaceutical companies, it has improved drug registration, and boosted checks on manufacturing and marketing of drugs, the agency said. The withdrawals show that the pharmaceutical companies are examining themselves in this particular campaign and their consciousness for drug safety has been greatly enhanced, Wu Zhen, deputy commissioner of the State Food and Medication Administration, told a news conference.Related StoriesCharles Bonnet syndrome: an interview with Dr. Dominic ffytcheAdvances entirely mount mind imaging: an interview with Patrick Myles, President, Huron Digital PathologyDiagnosing traumatic mind injury through a bloodstream check: an interview with Dr Korley These regions are essential for social behaviors, mating behavior particularly, said lead writer Maggie Mohr, a doctoral pupil in neuroscience. Therefore, we thought probably cells that are put into those parts of the mind during puberty could possibly be very important to adult reproductive function. To check that idea, Cheryl and Mohr Sisk, MSU professor of psychology, injected male hamsters with a chemical substance marker showing cell birth during puberty. When the hamsters matured into adults, the experts allowed them to interact and mate with females.