string: Sensitivity of modulation of muscle contraction by TNRNFLRFamide is similar in C. productus and C. borealis
  FLRFamides have previously been shown to increase nerve-evoked contraction and/or induce myogenic activity in crustacean stomatogastric muscles (Meyrand and Marder 1991), including those of Cancer borealis (Jorge-Rivera and Marder 1996).