Table 4.

Effect of the dominant negative MAPKK1 mutant, MANA, on colony formation

Cells	% Colony-forming efficiency*	% Abortive colonies
puro	28.3  ±  1.4	27.5  ±  2.4
MANA	14.5  ±  0.2	52.7  ±  6.1

Data are means of triplicate dishes. ∗, % of plated cells that form colonies.