Serial cross-sections of double-stained pupal epithelial cells.
Cells were double-stained with BODIPY FL Thapsigargin for ER and MitoTracker Orange for mitochondria. Extensive overlapping of green and red signals is largely because of highly intermingled mitochondria and ER. Cell A and cell B exhibited extensive connections via epidermal feet. A white arrow indicates mitochondria inside an epidermal foot.