In support of these findings, the Western blot analysis of elastin from protein extracts of formalin-fixed paraffin-embedded (FFPE) COVID-19 lungs identified a dramatic reduction in the tropoelastin band at 70 kDa, whereas lung extracts from COVID-19-negative patients contained clearly detectable tropoelastin (Figure 2F). This evidence concerns the gene ELN and COVID-19.