Yp1 sequences from -343bp to -1029bp (with respect to Yp2 cap site) are fused to the Hsp70Bb promoter of Ecol\lacZHsp70Bb.-194.
Yp1 sequences from -886bp to -196bp are fused to the Hsp70Bb promoter of Ecol\lacZHsp70Bb.-194.
Expression is detected in the adult female fat body.