Figure 9. ssGSEA score of E1, E2, E3, DUB, UBD, ULD and the expression of 11 Ub-related hub genes in RA (A), COPD (B), COVID-19 (C), and LA (D) dataset. Abbreviations: RA: rheumatoid arthritis; COPD: Chronic obstructive pulmonary disease; COVID-19: corona virus disease 2019; LA: lung adenocarcinomas.