CD9 and multiple system atrophy: No significant differences were observed in the most (26 kinds) of cells, including WBC, %NEUT, %LYMPH, %MONO, #NEUT, #LYMPH, #MONO, CD3, CD3+CD56+, CD3+CD4+, CD3+CD8+, CD3+CD4+/CD3+CD8+, CD4+CD45RA+, CD4+CD45RO, CD4+CD45RA, CD8+CD45RO, PD1+, CD4+CD25+CD127−, CD3+, CD3−CD56+, CD3+CD4+, CD3+CD8, CD4+CD45RA+, CD4+CD45RO+, CD8+CD45RA+, and CD9+CD45RO+, while significant differences were observed in %CD19+, CD3−CD56+, and #CD19+ peripheric immune cells between the MSA and non-MSA groups (p < 0.05).