Extended Data Fig. 10: Lung adjacent organs such as the heart can also be imaged with the crystal ribcage.
From: Crystal ribcage: a platform for probing real-time lung function at cellular resolution

Here using a laser-scanning confocal (a) the heart is imaged with a 1.25x objective to show (b) the overlapping lobes of the lung followed by (c) higher resolution images of the atrial surface and (d) muscle structures.