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Recovery of T and B cell development after neonatal treatment with IFN-α2/α1. 3-d-old mice injected with PBS or IFN-α2/α1 for 6 consecutive d were examined serially after the last treatment. T and B cells were identified by CD3 and B220 expression, respectively. Results of the enumeration of thymocytes, T cells in the spleen, and B cells in the spleen and bone marrow are presented as mean percentages of control values (I = ± standard error; n = 3 mice).
