Table 3.

Apoptotic cell counts in the ventral spinal cords of E13 double heterozygous (Bcl-x HET:Bax HET), BKO, and BKO:Bax Null Embryos

	Bcl-x HET:Bax HET	BKO	BKO:Bax Null
Apoptotic cells	0.0 ± 0.0	30.2 ± 8.1	0.0 ± 0.0
Total nuclei	151.5 ± 19.8	153.5 ± 8.7	145.5 ± 16.8
% Apoptotic cells	0.0 ± 0.0	19.6 ± 4.7*	0.0 ± 0.0
# of Embryos	4	4	4

Apoptotic cells were identified as immunopositive for active Caspase-3 with completely condensed nuclei. Cells were counted within a 150 µm × 150 µm box placed in the ventrolateral horn of the spinal cord. Means ± SD are indicated

*p  < 0.0001