An Hsp70 promoter drives expression of pros.
scutum & external sensory organ
scutum & microchaeta
scutum & microchaeta & tormogen cell
scutum & microchaeta & trichogen cell
Animals expressing proshs.PM using heat shock for 1 hour at 14 hours after puparium formation show fairly severe balding in the notum; 90% of the flies lack approximately 20% of the microchaetae. Double bristles are seen at the edge of the bald areas, and very rarely, triple bristles are seen.
Flies expressing proshs.PM between 15-20 hours after puparium formation using heat shock show partial balding of the notum.
F. Matsuzaki