Which T-lymphocyte phenotype is the key determinant of childhood asthma? A) CD4 T-helper Th₁ lymphocytes B) CD4 T-helper Th₂ lymphocytes C) CD8 cytotoxic T-lymphocyte D) Memory T-lymphocyte

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CD4 T-helper Th₂ lymphocytes are the key determinant of childhood asthma. These T-helper cells secrete cytokines that promote inflammation and airway hyperresponsiveness, which are both characteristic features of asthma.

Which T-Lymphocyte Phenotype Is the Key Determinant of Childhood Asthma