TABLE 3.

Regression model showing that density of cells with DNA breaks = β₁ density of Bcl-2-positive cells + β₂ density of p53-positive cells^a

Parameter (βi)	Estimate	t for H0b	P
Bcl-2-positive cells	0.021	0.288	0.781
p53-positive cells	0.919	3.008	0.017

^aModel (error): df, 2 (8); sum of squares, 1,903,299.294 (360,090.706); mean square, 951,649.647 (45,011.338); F value, 21.142; P = 0.001; r² = 0.841. 

^bParameter estimate = 0.