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Karpen JW, Sachs AB, Pasquale EB, et al. (1986) Spectrophotometric detection of monovalent cation flux in cells: fluorescence microscope measurement of acetylcholine receptor-mediated ion flux in PC-12 cells. Analytical Biochemistry. 157: 353-9
Karpen JW, Hess GP. (1986) Acetylcholine receptor inhibition by d-tubocurarine involves both a competitive and a noncompetitive binding site as determined by stopped-flow measurements of receptor-controlled ion flux in membrane vesicles. Biochemistry. 25: 1786-92
Karpen JW, Hess GP. (1986) Cocaine, phencyclidine, and procaine inhibition of the acetylcholine receptor: characterization of the binding site by stopped-flow measurements of receptor-controlled ion flux in membrane vesicles. Biochemistry. 25: 1777-85
Karpen JW, Hess GP. (1985) D-tubocurarine inhibition of the acetylcholine receptor: Stopped-flow measurements of receptor-mediated ion flux in membrane vesicles Federation Proceedings. 44: NO. 475
Sachs AB, Leprince P, Karpen JW, et al. (1983) Phencyclidine inhibition of the acetylcholine receptor: measurement of cation flux in a sympathetic neuronal cell line using 22Na+ and spectroscopic detection of Cs+. Archives of Biochemistry and Biophysics. 225: 500-4
Karpen JW, Sachs AB, Cash DJ, et al. (1983) Direct spectrophotometric detection of cation flux in membrane vesicles: stopped-flow measurements of acetylcholine-receptor-mediated ion flux. Analytical Biochemistry. 135: 83-94
Karpen JW, Aoshima H, Abood LG, et al. (1982) Cocaine and phencyclidine inhibition of the acetylcholine receptor: analysis of the mechanisms of action based on measurements of ion flux in the millisecond-to-minute time region. Proceedings of the National Academy of Sciences of the United States of America. 79: 2509-13
Hess GP, Pasquale EB, Karpen JW, et al. (1982) Acetylcholine receptor-controlled ion translocation. A comparison of the effects of suberyldicholine, carbamoylcholine, and acetylcholine. Biochemical and Biophysical Research Communications. 107: 1583-8