Expression of MybScer\UAS.cDa under the control of Scer\GAL4e33C restores circulating crystal cells and crystal cells in the lymph gland in homozygous MybMH107 larvae. The mutant phenotype seen in the MybMH107 lymph glands are also rescued by expression of MybScer\UAS.cDa under the control of Scer\GAL4e33C.