The MSC lines were previously isolated from amniotic membrane of human placenta, cord blood, cord tissue, bone marrow, and adipose tissue, expanded and characterized. 13 , 14 , 15 , 16 , 17 All the MSCs fulfill the criteria set by the International Society for Cell & Molecular Therapy (ISCT). 18 To perform the experiments, we used passage 3 to 5 MSCs. Conditioned media were generated as described 13 , 19 with some minor modification described in the Supporting Information Methods, in order to evaluate the soluble amount of ACE2. The human lung Calu‐3 (ATCC HTB‐52) and the African green monkey kidney VERO E6 (VERO C1008; ATCC CRL‐1586) cell lines were purchased and maintained as indicated by ATCC (

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