Fig. 1. Synaptic bouton quantification in mys^olfC alleles. (A) Representative muscle 12 NMJ morphology in mature third instars of wild-type, mys^b9, mys^ts1 and mys^olfCX17 alleles. Black arrowheads indicate type I boutons. White arrowheads indicate type II boutons. Scale bar indicates 20 µm. (B) Quantification of boutons for each allele and for mys^olfCX17/mys^XG43, a null allele. Note that mys^ts1 is among the least severe of the mys overgrowth alleles, whereas the mys^b9 undergrowth allele is clearly very different. Error bars indicate s.e.m. (*P<0.05; **, P<0.01; ***, P<0.001).