title: Transient changes in isotonic shortening velocity of frog rectus abdominis muscles in potassium contracture.
mesh_terms: D000818:Animals; D001001:Anura; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology*
chemical_list: D011188:Potassium