| ACE2 | Angiotensin-converting enzyme 2. |
| ARDS | Acute respiratory distress syndrome. |
| AT1 | Alveolar type I. |
| AT2 | Alveolar type II. |
| BALF | Broncho-alveolar lavage fluid. |
| BioC | Bioconductor. |
| CD4 | Cluster of differentiation 4. |
| CD8 | Cluster of differentiation 8. |
| COVID-19 | Coronavirus disease 2019. |
| CSF | Cerebrospinal fluid. |
| DEG | Differentially expressed gene. |
| EC | Endothelial cell. |
| GEO | Gene Expression Omnibus. |
| GSEA | Gene set enrichment. |
| GZMA | Granzyme A. |
| GZMB | Granzyme B. |
| HPIV3 | Human parainfluenza virus 3. |
| HUVEC | Human umbilical vein EC. |
| IAV | H1N1 influenza A virus. |
| ID | Identifier. |
| IPF | Idiopathic pulmonary fibrosis. |
| ISG15 | Interferon-stimulated gene 15. |
| LUCAT1 | Lung cancer-associated transcript 1. |
| MIS-C | Multisystem inflammatory syndrome. |
| NGS | Next-generation sequencing. |
| NK | Natural killer. |
| ORFs | Open reading frames. |
| PBMCs | Peripheral blood mononuclear cells. |
| PMID | PubMed unique identifier. |
| RNA-seq | RNA sequencing. |
| SARS | Severe acute respiratory syndrome. |
| SARS-CoV-2 | SARS coronavirus 2. |
| STRING | Protein–protein interaction networks functional enrichment analysis. |
| Scopus | Elsevier abstract and citation database. |
| TCR | T-cell receptor. |
| TCGA | The Cancer Genome Atlas. |
| UMAP | Uniform manifold approximation and projection. |
| hACE2 | Human angiotensin-converting enzyme 2. |
| pDCs | Plasmacytoid dendritic cells. |
| scRNA-seq | Single-cell RNA sequencing. |