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In subjects with COPD, correlations between the numbers of (A) sub-CD68+ and (B) CD4+ on day 7 and peak nasal lavage virus load, (C) between sub-CD20+ on day 7 and peak sputum virus load, and (D) between sub-CD8+ cells on day 7 and BAL virus load (Spearman rank correlation, n = 17 or 9).
