It is worth noting that creatinine (Cr), age, neutrophil percentage (NEUT%) were positively correlated to PJP BALF microbiota, while lymphocyte percentage (LYM%), albumin (ALB), total protein (TP), IgG, CD3+CD45+, CD3+CD4+, and CD3+CD8+ T cells were negatively correlated (Fig. 5A). The gene discussed is CD4; the disease is pneumocystosis.