Researchers analyzing prostate tumors have identified differences in gene expression (the degree to which individual genes are turned on or off) between African-American and European-American men that show the existence of distinct tumor microenvironments (the area that includes the tumor and the surrounding non-cancerous tissue) in these two patient groups. These findings by researchers at the National Cancer Institute (NCI), part of the National Institute of Health, appeared online February 1, 2008, in Cancer Research.
