Table. 3—

Mean fluorescence intensity values of the surface receptors studied in peripheral blood monocytes (PBM) and alveolar macrophages (AM)

	Nonsmokers		Smokers
	Nonsmokers		Normal lung function		COPD
	PBM	AM	PBM	AM	PBM	AM
Subjects n	9		14		18
CD36	1528±237^##	13±4	1713±387^##	21±7	1695±188^##	13±3
CD51	23±8	18±3	26±13	22±3	16±6	18±3
CD61	89±12^##	8±2	231±59^##	16±3	119±31^##	10±2
CD14	474±21^##	36±7	544±37^##	50±17	502±33^##	25±6
CD44	1286±41	1371±102	1151±59	1305±48	1165±42	1199±74
HLA-DR	35±4	46±5	37±7	44±4	29±3	28±2**
CD80	1.2±0.7^##	39±4	1±0.1^##	38±6	1±0.2^##	19±4**
CD86	29±3^##	248±16	28±4^##	253±14	25±2^##	220±19
CD40	13±2^##	305±26	21±6^##	326±27	21±4^##	291±28
CD11b	685±49^##	39±9	731±44^##	52±6	719±38^##	49±6

Data presented as mean±sem. COPD: chronic obstructive pulmonary disease; HLA: human leukocyte antigen. **: p<0.01 with respect to nonsmokers and smokers with normal lung function; ^##: p<0.01 within groups (PBM versus AM).