CD8A and systemic lupus erythematosus: In particular, activated CD8+ T and Tc1 cells were markedly increased, as were plasmocytes, which are an important contributor in the SLE pathology (activated CD8+ T cells: 4.43% in SLE and 1.06% in HC; activated Tc1: 1.35% in SLE and 0.49% in HC and plasmocytes: 1.39% in SLE and 0.32% in HC).