No abstract available
MeSH terms
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CD4-CD8 Ratio
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Cytokines / metabolism
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Disease Progression
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Female
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Humans
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Immunity, Cellular*
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Male
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Middle Aged
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Phenotype
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Pulmonary Disease, Chronic Obstructive / immunology*
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Pulmonary Disease, Chronic Obstructive / metabolism
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Severity of Illness Index
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Smoking / adverse effects
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T-Lymphocytes / immunology*