Bacterially challenged ea2/ea7 mutants exhibit a wild type Drs response. Pattern of response of CecA1 and CecA2 parallels that of Drs. Dpt and Dro remain fully inducible and pattern of expression of AttA and Def in intermediate. Infection of ea1/ea2 mutants with A.fumigatus causes higher survival rate than wild type, infection with E.coli causes 87% survival 3 days postinfection.
Perivitelline fluid from Tl and dl donors was capable of restoring polarized gastrulation movements and cuticular elements. Perivitelline fluid transplantation using eaD8 embryos as donors and ea1/ea2 embryos as recipients demonstrated that the rescue of the ea phenotype results from the transplantation of the ea gene product.
Ventralized embryos: rings or patches of ventral denticles along dorsoventral axis. Altered pattern of dpp and zen.
Embryos derived from homozygous females are dorsalised.