Table 1 Distribution of the cell cycle phases (in %) in distinct topographic regions of placentae at different stages of gestation in cattle

G2/M

G-I: 70 to 120

20.0 ± 11.4^{a, b}

16.7 ± 7.0^{a, b}

23.4 ± 15.9^a

23.6 ± 3.1^a

8.9 ± 6.2^{b, B}

7.7 ± 4.3^b

G-II: 121 to 170

20.3 ± 10.2^a

18.9 ± 9.3^a

21.7 ± 11.1^a

18.3 ± 9.3^a

7.7 ± 2.1^{b, B}

5.4 ± 3.4^b

G-III: 171 to 220

21.6 ± 12.1^{a, b}

19.6 ± 13.7^{a, b}

23.6 ± 10.6^a

17.6 ± 9.4^{a, b}

13.1 ± 12.4^{a, b}

7.3 ± 4.1^b

G-IV: 221 to 290

18.8 ± 7.7

18.6 ± 5.9

19.0 ± 9.6

18.5 ± 6.5

21.8 ± 8.4^a

12.1 ± 11.3

S

G-I: 70 to 120

5.6 ± 3.5

5.7 ± 3.4

5.5 ± 3.6

5.6 ± 2.5

3.7 ± 3.1

3.1 ± 0.3

G-II: 121 to 170

4.4 ± 0.9

4.6 ± 0.9

4.1 ± 1.1

3.0 ± 1.4

3.2 ± 0.7

3.4 ± 1.1

G-III: 171 to 220

7.4 ± 4.6

10.2 ± 7.4

4.5 ± 1.8

5.0 ± 4.2

5.5 ± 4.6

3.6 ± 1.6

G-IV: 221 to 290

5.6 ± 3.3

8.2 ± 4.9

3.0 ± 1.8

3.7 ± 2.6

4.4 ± 3.9

3.0 ± 1.5

G0/G1

G-I: 70 to 120

63.7 ± 16.3^{a, b}

67.0 ± 13.8^{a, b}

60.4 ± 18.9^a

57.0 ± 9.1^a

84.3 ± 11.8^b

80.5 ± 10.9^b

G-II: 121 to 170

60.5 ± 18.1^a

64.6 ± 13.8^a

56.5 ± 22.3^a

64.3 ± 18.3^{a, b}

86.4 ± 2.0^b

87.7 ± 3.9^b

G-III: 171 to 220

54.2 ± 20.7^a

62.2 ± 18.1^{a, b}

46.2 ± 23.4^a

67.6 ± 15.7^{a, b}

78.8 ± 18.5^b

83.0 ± 7.1^b

G-IV: 221 to 290

56.1 ± 17.8

62.5 ± 10.0

49.8 ± 25.7

65.1 ± 15.8

71.2 ± 11.0

73.5 ± 22.1

Apoptosis

G-I: 70 to 120

10.7 ± 8.5^a

10.6 ± 8.5^a

10.7 ± 8.5^a

13.7 ± 9.8^a

3.0 ± 2.6^b

8.6 ± 8.5^a

G-II: 121 to 170

14.8 ± 8.9^a

12.0 ± 5.7^{a, b}

17.7 ± 13.3^a

14.4 ± 8.9^a

2.7 ± 0.4^b

3.5 ± 0.7^b

G-III: 171 to 220

16.9 ± 7.9^{a, b}

8.0 ± 3.7^b

25.7 ± 13.9^a

9.7 ± 8.2^b

2.7 ± 2.1^b

6.1 ± 3.3^b

G-IV: 221 to 290

19.5 ± 8.3^{a, b}

10.7 ± 4.7^b

28.2 ± 17.2^a

12.7 ± 10.3^b

2.6 ± 1.1^b

11.4 ± 9.4^b