In the sma-4 mutant background, che-13::gfp reporter expression during the L3 stage was not seen in either the B_gamma cell or its anterior descendants.
Larva hatched from UL2703 animals transgenic for ceh-19bprom::gfp and subject to RNAi for pha-4 are pharynxless (a1), and although expression in ADF and PHA was maintained, expression in MC was lost.