CD14 and COVID-19: Single-cell RNA-sequencing (scRNA-seq) of lung tissues from a COVID-19 autopsy case (Case 17) within 2 h after death revealed the presence of CD14+ monocytes (CD14+ Mono-1, -2), monocyte-derived alveolar macrophages (MoAM-1, -2), and other cell types (Fig. 4e; Supplementary information, Fig. S3).