Northern blot hybridizations displaying mRNA expression of hsp70 and hsp90 during dehydration in three mosquitoes (Aedes aegypti, Anopheles gambiae, and Culex pipiens). 28s was used as a control gene. Control, fully-hydrated mosquitoes; 5, 15, and 25% represent percent reduction in water content; rehy, mosquitoes that lost 15% of their water content and were then rehydration at 100% RH in the presence of liquid water. Each blot was replicated three times.