Bernard paralysed motor nerve-endings with curare and demonstrated the independent excitability of muscle. He showed that curare acted by stopping the transmission of impulses from motor nerves to voluntary muscles.
GMN 2079 · https://historyofmedicine.com/id/499
1872HEIDENHAIN, Rudolf Peter Heinrich (1834 – 1897)
Langley introduced the concept of a receptor substance present in the biological object with which a drug has to interact in order to exert its biological effect. Digital facsimile from PubMedCentral at this link.
Report on the first cases of "tick paralysis", a potentially lethal disease treatable by removing the tick. Follow-up paper by Todd: "Tick bite in British Columbia," Canad. med. Assoc. J., 2 (1912) 1118-1119. Unlike m…