Map-induced apoptosis of BAT2.2 T cells. BAT2.2 cells (2 × 106) (5 U IL-2/ml) were incubated in media alone (lane 2) or in the presence of either 100 μg Map19 (lane 3) or Ace40 (lane 4). DNA from U937 cells were used as a positive control (lane 5). Lane 1, 100-bp ladder.