Genetic differences in prostate cells seem to be a root cause of the prostate cancer disparities between African-American men and white men, according to findings presented at the Fourth AACR Conference on The Science of Cancer Health Disparities, held here Sept. 18-21, 2011. Prostate cancer is the second most common cancer among U.S. men, with occurrences and mortality rates higher in African-American men compared to white men. "There are a lot of socioeconomic and environmental factors that create differences in levels of prostate cancer in these two groups," said Bi-Dar Wang, Ph.D., assistant research professor of pharmacology and physiology at…