Figure 5.

Comparison of effector function. Effector cells from 6 × 10⁶ peripheral blood mononuclear cells (PBMC) of four calves (no. 14, no. 15, no. 16 and no. 17), experimentally infected with Mycobacterium bovis 20 weeks previously, were assayed for their ability to inhibit the growth of M. bovis within infected macrophages (Mφs) (black bars) or to lyse M. bovis-infected Mφs (grey bars). Results are shown as mean percentage growth inhibition and mean percentage specific lysis (± standard error of the mean).