Table 3.

Number of cortical neurons belonging to different morphological types in rats exposed to hypoxia on E18.

Type of cells	Days after birth
	P10	P20	P30	P60	P90
	The number of cortical cells in rats exposed to hypoxia on E18 in % to control
Small non-pyramidal	97.1 ± 12.6	110.4 ± 11.2	100.0 ± 11.5	92.0 ± 10.1	115.8 ± 21.1
Big non-pyramidal	95.0 ± 15.3	95.7 ± 10.5	115.6 ± 8.8	94.5 ± 7.8	99.7 ± 17.4
Small pyramidal	104.3 ± 5.8	101.4 ± 8.2	92.4 ± 15.2	115.1 ± 19.9	92.8 ± 15.2
Big pyramidal	102.8 ± 3.7	110.6 ± 11.6	108.4 ± 7.2	100.0 ± 4.4	97.9 ± 15.5
Total cell number	100.5 ± 4.4	99.1 ± 3.8	90.7 ± 9.8	105.2 ± 9.4	105.0 ± 9.2
GFAP-positive cells	101.7 ± 3.2	104.6 ± 4.8	105.2 ± 6.7	104 ± 6.4	94.7 ± 8.9
Fox3 (NeuN)-positive	96.8 ± 8.4	108.5 ± 9.6	91.4 ± 11.5	93.5 ± 7.7	94.1 ± 10.5

Neural cells were classified by their size (area) and shape (ratio of the longest to the shortest axes) of the cell body. Data are presented as the ratio (mean number of cells in rats exposed to hypoxia/mean number of cells in control rats) in % ± Standard error of the difference between the means of two samples. 100%—cell number in control rats. In each group of animals (n = 8) 10 cortical tissue areas of each animal were analyzed by Nissl staining or immunohistochemistry. No changes (compared to control) in rats, exposed to hypoxia on E18, were observed.