Back Cover: Saturated two‐photon excitation fluorescence microscopy for the visualization of cerebral neural networks at millimeters deep depth (J. Biophotonics 1/2019)

TP‐SAX microscopy images are shown in cyan, cyan hot, red, gray, and orange hot colors; TPFM images are in green color while the LSCM image is in magenta color. Our results show a spatial resolution enhancement for TP‐SAX (cyan image) even at 2.4 mm depth of a mouse brain in comparison with TPFM (green image) where scattering seriously degrades the PSF. Further details can be found in the article by Sandeep Chakraborty, Szu‐Yu Lee, Jye‐Chang Lee, Chen‐Tung Yen, and Chi‐Kuang Sun ( e201800136 ).