Titlebook: A Symposium on Calcium and Cellular Function; A. W. Cuthbert (Lecturer in Pharmacology) Book 1970 Palgrave Macmillan, a division of Macmil

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Anleitung zur Kultur der Mikroorganismenaration of the frog is immersed in normal Ringer solution, an adequate stimulus to the nerve produces a twitch. When the calcium concentration in the medium is reduced to, say, one-eighth of the normal, a similar stimulus produces no mechanical response. If the effect of partial or total calcium dep

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Anleitung zur Kultur der Mikroorganismenolleagues have published since 1961 (Douglas, 1968). However, three major questions concerning the calcium-dependent secretion of catecholamines remain unanswered. These are, first, how is calcium entry into chromaffin cells regulated; second, what is the nature of the process activated by calcium;

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Preußisches Meteorologisches Institutess of hormone release may be no less critical. Thus the synaptic release of acetylcholine and noradrenaline is calcium dependent (Harvey & MacIntosh, 1940; del Castillo & Stark, 1952; Huković & Muscholl, 1962; Kirpekar & Misu, 1967); but so, too, is the release of many hormones (Table 1). Furthermo

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G. H. Simmons M.D.,M. Fislibein M.D.eting tissues during membrane depolarization or stimulation by hormones (Woodin, 1968). This was known to be true in a descriptive sense several years ago (Woodin & Wieneke, 1966a), and recent work suggests that it is also true of the mechanisms. Thus diisopropyl phosphorofluoridate (DFP) and tetrae

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https://doi.org/10.1007/978-3-662-41343-2is concerned with some of the uses which have been made of EGTA in studying the role of calcium in the contraction of the large single muscle fibres which can be obtained from certain crustacea, in particular crabs (.) and barnacles (.).

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Anleitung zur Kultur der Mikroorganismenn unanswered. These are, first, how is calcium entry into chromaffin cells regulated; second, what is the nature of the process activated by calcium; third, how is calcium removed from the cells at the end of the secretory response? Evidence touching upon these three questions is discussed here.