Antimicrobial developer Micurx Pharmaceuticals Inc. raised $25 million in a Series B to fund the U.S. development of MRX-I, its oral oxazolidinone antibiotic targeting infections from multidrug-resistant gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE).