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Sema4A is induced during T helper cell differentiation. Sema4A mRNA (A) and protein (B) levels in unstimulated naïve CD4+ T cells or in Th1, Th2 or Th17 differentiated cells for 3 days (n = 4) and 7 days (n = 6). Means and SEM are shown. * p < 0.05 and **** p < 0.0001 compared to the medium at day 3. ### p < 0.001 and #### p < 0.0001 compared to the medium at day 7.
