TY - RPRT TI - Paramagnetic labeling studies. 1. A new method for labeling proteins with a stable paramagnetic nitroxide radical. AU - T E Wagner AU - C J Hsu PY - 1970 DO - 10.1016/0003-2697(70)90324-6 UR - https://pubmed.ncbi.nlm.nih.gov/4320581/ ID - 4320581 ER -