title: Dependence of force and immediate stiffness on sarcomere length and Ca2+ activation in frog skinned muscle fibres.
mesh_terms: D000255:Adenosine Triphosphate / Q000494:pharmacology; D000818:Animals; D001696:Biomechanical Phenomena; D002118:Calcium / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D008274:Magnesium / Q000494:pharmacology; D009119:Muscle Contraction / Q000187:drug effects*; D009129:Muscle Tonus / Q000187:drug effects*; D009132:Muscles / Q000502:physiology; D011896:Rana temporaria
chemical_list: D000255:Adenosine Triphosphate; D008274:Magnesium; D002118:Calcium