TY - RPRT TI - A refocused and optimized HNCA: increased sensitivity and resolution in large macromolecules. AU - B T Farmer AU - R A Venters AU - L D Spicer AU - M G Wittekind AU - L Müller PY - 1992 DO - 10.1007/bf01875530 UR - https://pubmed.ncbi.nlm.nih.gov/1422152/ ID - 1422152 ER -