Correlation between TNF-α -308 and +489 Gene Polymorphism and Acute Exacerbation of Chronic Obstructive Pulmonary Diseases

Figure 2

TNF-α gene genotypes affect the expression level of TNF-α in macrophage. (a) TNF-α concentration is increased in serum from AECOPD patients. (b) TNF-α concentration in serum from AECOPD patients with different TNF-α gene genotypes. (c) The expression of TNF-α in the data from public online databases. (d) TNF-α secreted by macrophages with different TNF-α gene genotypes.

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(b)

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