title: Adaptation of an automatic assay apparatus for use with the frog rectus muscle preparation.
mesh_terms: D000009:Abdominal Muscles; D000818:Animals; D001001:Anura; D001331:Automation; D001681:Biological Assay / Q000295:instrumentation*; D007734:Kymography / Q000295:instrumentation*; D009132:Muscles / Q000187:drug effects*