Table 2. YAP and PD-L1 IHC comparison in normal human lung tissues.

		YAP
		Positive (++/+++)	Negative (−/+)	Total
PD-L1	Positive (++/+++)	0	0	0
	Negative (−/+)	0	15	15
Total		0	0

− = no stain; + = weak stain; ++ = moderate stain; +++ = strong stain; ++/+++ = positive; −/+ = negative.