The extra-long MEC-2E::RFP is expressed specifically in touch neurons. Similar to the long MEC-2A isoform, the extra-long MEC-2E isoform is expressed in a punctate pattern in both the cell bodies and the neurites of the touch neurons, and this expression is abolished in
mec-8 mutants. Unlike the short MEC-2B isoform, there is no detectable expression of extra-long MEC-2E in head neurons.