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Table 1 Human gut samples

From: The human neonatal small intestine has the potential for arginine synthesis; developmental changes in the expression of arginine-synthesizing and -catabolizing enzymes

Group

Age

# of samples

Sample origin

Resections

Biopsies

   

SI

D

J

I

  

1

-182/-3 days

9

7

 

2

 

9

0

2

1 – 11 days

14

1

4

3

6

14

0

3

6 wks – 1 yr

10

4

1

 

5

9

1

4

1,5 – 3 yrs

12

2

7

 

3

5

7

5

3 – 5 yrs

16*

 

15

 

3

0

16

6

5 – 7 yrs

18*

 

16

 

5

2

16

7

14 – 22 yrs

5

 

1

 

4

4

1

8

50 – 80 yrs

5

 

4

 

1

5

0

  1. The table shows the number of samples that were analyzed per age group, the topographic location of the samples (SI = small intestine, D = duodenum, J = jejunum, I = ileum), and whether they were mucosal biopsies and full-thickness resections. For age groups 5 and 6, parallel samples were available from two different regions of the small intestine. These were used to check for the effect of location on enzyme expression, but only one sample per patient was taken into account for the statistical analysis. This is the reason for the discrepancy between "# of samples" (marked by an asterisk) and the sum of all samples listed under "Sample origin".