Fig. 7. The in situ profile of Hsp70 in unstressed testes of wild-type larvae (A–H) or pupae (I–L) of different ages (marked on each panel in hours after egg hatching) and in an adult (M) revealed by immunostaining with the 7Fb antibody. A higher-magnification image of the boxed area in J is shown in L. Expression of hsp70 genes in the spermatogonial cells of the unstressed pupal testis detected by RNA:RNA in situ hybridization using the cDNA riboprobe is shown in N. Scale bars (which apply to all images in a given row, except L and N), 200 µm.