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Table 1 Numbers of spt-expressing neurons per somite level (pair of hemisegments) at 24 hpf

From: The identity and distribution of neural cells expressing the mesodermal determinant spadetail

Somite level

Somite number

Number of embryos

Mean cell number

Standard deviation

-14

32

3

0

0

-13

31

7

0

0

-12

30

12

0

0

-11

29

15

0.07

0.26

-10

28

19

0.16

0.50

-9

27

19

0.47

0.61

-8

26

19

0.47

0.61

-7

25

19

0.63

0.76

-6

24

20

0.55

0.69

-5

23

20

0.50

0.61

-4

22

20

0.70

0.92

-3

21

20

0.55

0.69

-2

20

20

0.55

0.60

-1

19

20

0.95

0.83

0

18

20

0.95

1.05

+1

17

20

0.70

0.66

+2

16

20

0.70

0.73

+3

15

20

0.95

1.00

+4

14

20

0.75

0.79

+5

13

20

1.00

0.92

+6

12

20

0.75

0.72

+7

11

20

1.40

0.68

+8

10

20

1.45

1.19

+9

9

19

1.11

0.88

+10

8

17

1.47

1.01

+11

7

13

1.92

1.38

+12

6

7

1.14

0.69

+13

5

4

0.75

0.50

+14

4

2

0

0

  1. Somite level 0 represents the somite pair immediately dorsal to the most posterior extremity of the yolk extension. Negative values are more caudal to somite level 0 and positive values are more rostral. The common identity of each somite pair (i.e. disregarding variability between embryos) in terms of its order of formation is given as the somite number