Scientists have modeled a system that may be used to control mosquitoes and the diseases they transmit, without the use of pesticides. In the proposed system, mosquitoes are engineered to carry two genes. The first gene causes males to transmit a to…
Until now, researchers thought that breast cancer nearly always began when cells in the epithelium went haywire. But new research suggests that genetic mutations can ? and do ? occur initially in a deeper layer of breast tissue, called the stroma. This presents a serious concern for physicians, who believed that breast tumors spread from epithelial tissue. “Genetic alterations in carcinomas, including breast cancers, have always been attributed to epithelial cells,” said Charis Eng, Klotz professor and director of the Clinical Cancer Genetics Program at Ohio State University. She co-authored a new study that looks at genetic mutations in breast tissue.