[Retracted] Effect of Autoimmune Cell Therapy on Immune Cell Content in Patients with COPD: A Randomized Controlled Trial

Table 11

Comparison of proportion of NK cells in the peripheral blood serum between two groups (%).

Project	Control group; ()	Treatment group; ()
Before treatment			0.068	0.946
30 days after treatment		△	2.767	0.009
90 days after treatment		△	4.297	≤0.001