We analyzed the correlation between SARS-CoV-2 and SARS-CoV pseudovirus infection levels with the expression levels of the hACE2 receptor using three different cell types that overexpress the ACE2 receptor: human kidney 293T/ACE2 cells, human fibrosarcoma HT1080/ACE2 cells, and the human lung carcinoma cells A549/ACE2. Here, ACE2 is linked to lung carcinoma.