Penetration of horseradish peroxidase into the terminal cisternae of frog skeletal muscle fibers and blockade of caffeine contracture by Ca ++  depletion.
D000818:Animals; D001001:Anura; D002110:Caffeine / Q000037:antagonists & inhibitors; D002118:Calcium / Q000378:metabolism; D003864:Depression, Chemical; D005110:Extracellular Space; D066298:In Vitro Techniques; D008854:Microscopy, Electron; D009119:Muscle Contraction / Q000187:drug effects; D009129:Muscle Tonus / Q000187:drug effects; D009132:Muscles / Q000166:cytology; D009210:Myofibrils / Q000201:enzymology; D010544:Peroxidases / Q000008:administration & dosage / Q000378:metabolism*; D010873:Pinocytosis; D011894:Rana pipiens; D012508:Sarcolemma; D012519:Sarcoplasmic Reticulum; D013223:Statistics as Topic; D013268:Stimulation, Chemical; D013997:Time Factors
D002110:Caffeine; D010544:Peroxidases; D002118:Calcium