Fig. 2

Expression of SARS-CoV-2 receptor in hEROs during embryonic retinal development. A The relative mRNA expression of ACE2 and TMPRSS2 (TMP) in hECSs (ES) and hEROs (D60, D90, D150, and D280). B Representative images of the expression of ACE2⁺ and TMP⁺ cells at day 60, 90, 150, and 280 by immunofluorescence staining. Scale bar, 50 μm. Data are presented as means ± SD. ***P < 0.001, ****P < 0.0001