Mammography has helped increase the early detection of breast tumors. Now, researchers say, the goal is to discern which of those tumors need aggressive treatment, including chemotherapy or radiation after surgery.
Chicago Tribune/Getty Images
Rep. Tom Price (center) appeared in early 2016 before the House Rules Committee, when he sponsored legislation that would repeal President Obama's signature health care law.
J. Scott Applewhite/AP
A Pennsylvania woman developed a urinary tract infection cased by Escherichia coli bacteria that were found to be resistant to colistin, an antibiotic that is seen as the last line of defense.
Nature's Geometry/Science Source