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. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: Dev Cell. 2008 Feb;14(2):275–286. doi: 10.1016/j.devcel.2007.12.005

Figure 3. PC precursors are specified from fat body cells surrounding the male gonad.

Figure 3

St. 17 gonads immunostained as indicated in the figure. Anterior is to the left in each panel. (A) Expression of the svp-lacZ fat body enhancer trap overlaps with SOX100B-positive PC precursors. (B) Cells that express the PC precursor marker Kr-GAL4, UAS-GFP also express SRP. (C) A srp mutant gonad that lacks PC precursors but has msSGPs (co-expressing SOX100B and EYA, arrow). (D,E) EMS is expressed in cells that ensheath the male (D), but not female (E) embryonic gonad. (F,G) SOX100B-positive PC precursors surround the wild-type male gonad (F, arrowhead) but are not observed in ems mutant gonads (G), which only exhibit SOX100B expression in msSGPs (arrow).