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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 (http://creativecommons.org/licenses/by/4.0/).
Relative expression of TMPRSS2, CD147, ACE-2 and CTSL in ocular structures. The figure summarizes data available from immunohistochemistry and gene expression profiles. (-) No expression, (+) Low expression, (+) Moderate expression, (+) High Expression.