[Retracted] The Change of Soluble Programmed Death Ligand 1 (sPD-L1) in Plasma of Small Cell Lung Cancer and Its Clinical Significance

Table 2

Comparison of sPD-L1 expression levels between the two patient groups ().

Group	sPD-L1 expression levels (ng/ml)
Experimental group ()
Control group ()
	7.40
	<0.01