A 2.2kb ems cDNA fragment is under the control of a heat shock promoter.
heatshocked induced ubiquitous expression of emshs.PH before stage 6/7 results in severe developmental defects including malformations in the CNS.
heatshocked induced ubiquitous expression of emshs.PH in ems2 null mutants, results in a restoration of brain morphology. In a quarter of cases the cellular gap and the longitudinal ganglion are restored. Also a weak restoration of ems labelled commissural and longitudinal axonal projections are observed, though completely wild-type projections are never attained.