CD177 and infection: To expand its applications, multi-center clinical trials were conducted to verify the clinical diagnostic value of CD177+ neutrophils as an inflammatory marker for specific diseases, including assessing the ratios of CD177+ neutrophils to total neutrophils, CD177+ neutrophils to lymphocytes, and CD177+ neutrophils to high-density lipoprotein, which may serve as cut-off points for determining the state of infection.