(This story has been posted on The Wall Street Journal Online's Health Blog at http://blogs.wsj.com/health.) By Stefanie Ilgenfritz Here's what's making health news this morning: Justices Question Health Law (WSJ): The Supreme Court's conservative justices sharply challenged the Obama administration's health-care overhaul Tuesday, raising the prospect that the law could be struck down, while the liberal and conservative wings seemed inclined to split evenly over the question of whether the "individual mandate" is constitutional. Health Executives Unfazed by Debate (WSJ): Insurance companies and hospital chains brushed off concerns Tuesday the Supreme Court could strike down a requirement in the health-care law that would create millions of newly insured customers. In Real World, Mandate Stirs Some Dissent (NYT): Massachusetts offers a real-world laboratory of how a health-insurance mandate might work. Data Show Lower Risk for Bypass Than Stent (WSJ): For patients facing a choice between bypass surgery and a popular, less-invasive procedure to treat heart blockages, surgery improves chances of long-term survival, researchers said Tuesday. Va. Man Injured in Gun Accident Gets New Face (USAT): A 37-year-old U.S. man injured in a 1997 gun accident has received what doctors say is the most extensive face transplant ever performed. Cancer Research Targets a Key Cell Protein (LAT): Blocking "don't destroy me" signals that normally sit on the surface of tumor cells and render them resistant to immune-cell attack slows the growth of a broad range of human cancers when they're implanted in mice, researchers have found. FDA Approves Drug to Treat Anemia (Dow Jones): The Affymax Inc. drug, which will be sold under the brand name Omontys, would compete with Amgen Inc.'s Epogen, which is approved for use in the same group of patients. Defibrillator Wires Linked to Fatalities (WSJ): Heart-defibrillator wires made by St. Jude Medical Inc. are responsible for at least 20 deaths because of "high-voltage failures," according to an analysis published online in a cardiac-medicine journal. -For continuously updated news from The Wall Street Journal, see WSJ.com at http://wsj.com.