Skip to main content

Table 2 Expression of α- and β-keratins during embryonic chicken development

From: Dynamic evolution of the alpha (α) and beta (β) keratins has accompanied integument diversification and the adaptation of birds into novel lifestyles

Sample comparisons (Tissue/embryonic day of development)

Number of differentially expressed α- and β-keratins

Type I α-keratins*

Type II α-keratins*

Keratinocyte β-keratins*

Scale β-keratins*

Claw β-keratins*

Feather β-keratins*

DF8/DF17

11[↓]

2[↑]; 7[↓]

10[↓]

9[↓]

12[↓]

67[↓]

DF8/DF19

11[↓]

1[↑]; 8[↓]

9[↓]

5[↓]

8[↓]

61[↓]

DF17/DF19

2[↑]

0

3[↑]

8[↑]

10[↑]

67[↑]

DF17/WF17

5[↓]

1[↓]

2[↓]

7[↓]

0

3[↓]

DF19/WF19

1[↑]; 1[↓]

3[↑]; 1[↓]

0

8[↓]

8[↓]

5[↓]

SC8/DF8

1[↑]; 1[↓]

3[↑]; 1[↓]

0

2[↑]

0

13[↑]; 1[↓]

SC8/SC17

1[↑]; 12[↓]

1[↑]; 10[↓]

10[↓]

9[↓]

12[↓]

70[↓]

SC8/SC19

1[↑]; 13[↓]

1[↑]; 8[↓]

10[↓]

9[↓]

12[↓]

65[↓]

SC17/DF17

4[↑]; 2[↓]

6[↑]

6[↑]; 1[↓]

9[↑]

11[↑]

17[↑]; 8[↓]

SC17/SC19

1[↑]; 1[↓]

2[↑]

4[↑]

3[↑]

1[↑]

35[↑]

SC17/WF17

4[↑]; 1[↓]

6[↑]; 1[↓]

9[↑]; 1[↓]

4[↑]; 4[↓]

12[↑]

17[↑]; 21[↓]

SC19/DF19

7[↑]; 1[↓]

5[↑]

7[↑]; 2[↓]

9[↑]

11[↑]

26[↑]

SC19/WF19

6[↑]; 1[↓]

4[↑]

4[↑]; 3[↓]

4[↑]

10[↑]

3[↑]; 1[↓]

WF17/WF19

1[↑]

0

1[↑]

0

0

5[↑]

  1. Number of differentially expressed α- and β-keratins during embryonic chicken development for 14 sample comparisons with a p-value cutoff of 0.05 and a fold change cutoff of 2.0. DF, dorsal feather; WF, wing feather; SC, scale.
  2. *Direction of selection is indicated in brackets (↑: Up-regulated; ↓: Down-regulated) after each copy number and refers to the first sample for each comparison.