Fig. 9. Anti-pY434 labels contact points between germ cells and follicle cells in germaria. (A) Wild-type (WT) or Src64¹⁷ germaria stained with phalloidin to label filamentous actin or anti-pY434. (B) Src64¹⁷ mutant follicle cells (left) or germ cells (right) are marked by the absence of GFP (green). Anti-pY434 stains ring canals and follicle cell-germ cell contacts only when the germ cells express Src64. Scale bars: 10 µm.