Table 2.

Number of germinal centers within tertiary lymphoid structures.

Germinal Centers	Lung Cancer (n = 18)		Lung Cancer-COPD (n = 43)
	NT Lung	T Lung	NT Lung	T Lung
0, n (%)	17 (94)	10 (56) *	43 (100)	36 (84) **,§
>1, n (%)	1 (6)	8 (44) *	0 (0)	7 (16) **,§

Values are represented as number and percentage of the total samples in both tumor (T) and non-tumor (NT) samples in both LC and LC-COPD groups of patients. Statistical analyses and significance: * p < 0.05, ** p < 0.01 between tumor and non-tumor lung specimens in either LC or LC-COPD groups of patients, § p < 0.05 in tumor lung specimens between LC and LC-COPD patients. The digit 0 means absence of germinal centers (GCs) in the samples.