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Proliferation of splenocytes and T cell-enriched populations from LiP2a-immunized and naive BALB/c mice in response to the rLiP2a protein. Splenocytes (a) or T cell-enriched populations (b), 5 × 105 cells per well, were incubated for 72 h in the presence of the indicated concentrations of rLiP2a and pulsed with 1 μCi of 3H-thymidine.
