Fig. 1: OPD and phase images of neurons acquired using different techniques.

a OPD of a hippocampal neuron imaged using CGM/QLSI31. b OPD of a mouse cortical neuron imaged using DHM. Reprinted with permission from13 © 2014, P. Marquet et al. c Phase image of a neuron imaged using DPM. Reprinted with permission from15 © 2014 Optical Society of America. d OPD image of a neuron imaged using DPM. Reprinted with permission from32 © 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. e OPD of a hippocampal neuron imaged using SLIM. Reprinted with permission from24 © 2011 Optical Society of America