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Different patterns of gene expression of immune-related molecules by the three pairs of Th lineages. The line cells were collected after 4 days in culture and examined by qPCR for expression of nine selected chemokines and chemokine receptor transcripts (a) and by flow cytometry for expression of six major cell surface Ags (b). Summaries of three independent experiments. Ag, antigen; qPCR, quantitative-PCR; Th, T-helper.
