title: Influence of external cations on caffeine-induced tension: Calcium extrusion in crayfish muscle.
abstract: The transience of caffeine-induced tensions in crayfish muscle fibers indicates a caffeine-insensitive, Ca-transport system in these fibers. Analysis of the changes in relaxation time of caffeine tensions following ionic substitutions in the crayfish saline leads to the conclusions that this Ca-transport system is located in the sarcolemma and that the extrusion process involves binding of external cations, in particular Na.
authors.affiliation: Laboratory of Neurophysiology, Department of Neurology, Columbia University, College of Physicians and Surgeons, 10032, New York, New York.
authors.forename: M
authors.initials: M
authors.lastname: Orentlicher
authors.forename: R S
authors.initials: RS
authors.lastname: Ornstein