Expression of mrdsRNA.Scer\UAS under the control of Scer\GAL4elav-C155 results in an approximately 20% increase in the number of boutons/muscle area at the neuromuscular junction in third instar larvae compared to controls. Expression of mrdsRNA.Scer\UAS under the control of Scer\GAL4how-24B has no effect on bouton number at the neuromuscular junction in third instar larvae.