title: Tension-length relation of caffeine activated frog muscle.
mesh_terms: D000818:Animals; D002110:Caffeine / Q000494:pharmacology*; D008854:Microscopy, Electron; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects* / Q000648:ultrastructure; D011893:Rana esculenta; D013997:Time Factors
chemical_list: D002110:Caffeine