Table 4 Different elements of the camel hair cuticle and the medulla and cortex cross-section at the three different ages by SEM-EDX (mean ± standard error)

C

45.36 ± 0.52

43.80 ± 0.31

43.67 ± 0.26

54.71 ± 0.26

47.09 ± 0.35

62.44 ± 0.36

O

34.56 ± 1.11

31.65 ± 0.63

32.33 ± 0.54

31.97 ± 0.56

31.36 ± 0.70

30.57 ± 0.60

N

16.92 ± 1.07

20.87 ± 0.64

20.47 ± 0.54

12.72 ± 0.56

17.82 ± 0.71

1.66 ± 0.45

S

2.62 ± 0.14

3.67 ± 0.09

3.52 ± 0.08

0.54 ± 0.04

2.84 ± 0.09

1.47 ± 0.06

Ca

0.54 ± 0.09

–

–

0.06 ± 0.02

–

1.14 ± 0.07

AL

–

–

–

–

0.90 ± 0.06

1.51 ± 0.07

Si

–

–

–

–

–

0.97 ± 0.06

K

–

–

–

–

–

0.25 ± 0.04