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Real-time RT-PCR analysis of IL-4, IL-10, and IFN-γ mRNAs in lymph node cells from BALB/c mice 72 h after immunization with chemically treated nematode extracts. The data represent the arithmetic mean and standard deviation for five mice in each group. Cytokine RT-PCR transcripts are represented in arbitrary units (A.U.) relative to the reference Th-cell clone. One of three independent experiments with similar results is shown.
