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Cytokine mRNA expression patterns within families in which subclones produced IL-4 and/or IL-5 in the absence of exogenous IL-4. The cytokine profiles of the six subclones from Fig. 2A that produced IL-4 and/or IL-5 are aligned with the profiles of their siblings grown in either IL-2 (A) or IL-2 + IL-4 (B). Detection of a cytokine PCR product is indicated by shading of the boxes.
