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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
State-of-the-art visualization of the brain today is 10-fold magnification without cell visualization (pictures below). With CLE, we can see tumor borders (above left) and tumor-free zone at the end of the surgery (above right).