Fig. 2
From: Preclinical imaging methods for assessing the safety and efficacy of regenerative medicine therapies
The absorption coefficients of the main tissue absorbers, water and oxy- and deoxy-haemoglobin, over 600–1100 nm. The absorption of these endogenous pigments is at its lowest from 700–900 nm, creating an ‘optical window’ for in vivo imaging. Reprinted with permission from Macmillan Publishers Ltd: Phan, T. G. and Bullen, A. Practical intravital two-photon microscopy for immunological research: faster, brighter, deeper. Immunology and Cell Biology 88, 438–444, doi:10.1038/icb.2009.116 (2014)
