DTC experiments 1956 KATZ/C/134-146 all relate to four papers in the Proceedings of the Royal Society 7 May 1957: 'A Study of Curare Action with an Electrical Micro-Method' (pp. 339-356.) 'The Identity of 'Intrinsic' 2nd 'Extrinsic' Acetylcholine Receptors in the Motor End-Plate' (pp. 357-361.) 'A Comparison of Acetylcholine and Stable Depolarizing Agents' (pp. 362-368.) 'Interaction at End-Plate Receptors between Different Choline Derivatives' (pp. 369-381.) Folder marked 'D.T.C. Application' comprising notes on experiments, results, hand drawn graphs, calculations and chemical notes re DTC [d-tubocurarine], acetylcholine, endplates, prostigmine, carbachol, inhibition and microapplication, dated January - February 1956. With Jose del Castillo 1956