Figure 4.
Laser ablation to disrupt mechanical homeostasis of acini. (A) Schematic of the laser ablation experiment; green color depicts podocalyxin. (B) Time-lapse DIC and fluorescent GFP-podocalyxin images (GFP) of a 7-day-old acinus that was ablated with the laser in the red box (see Video 13); red arrow depicts damaged area from which fluid flows out. Corresponding outlines show podocalyxin-labeled surface (green) and acinar outer contour (black). Scale bar, 20 μm. (C) Time-lapse fluorescent GFP-podocalyxin images (GFP) of a 7-day-old control acinus post ablation (see Video 14). Scale bar, 20 μm. Corresponding outlines show podocalyxin-labeled surface (green) and acinar outer contour (black). Images in (C) are representative of six out of eight acini.