Draft manuscript and typescript for paper 'The nature of the vasodilator constituents of certain tissue extracts' by Henry Dale, C H Best, H W Dudley and W V Thorpe Draft manuscript and typescript for paper 'The nature of the vasodilator constituents of certain tissue extracts' by Henry Dale, C H Best, H W Dudley and W V Thorpe 'from the National Institute for Medical Research, Hampstead'. Annotation on the typescript notes that the manuscript was sent to A V Hill. The paper was published in the Journal of Physiology, 1927, 62, 397. 1926-1927