Table 1 Frequency of human cytokeratins identified in spots from 2D-PAGE in a human corneal study and mouse thymic lymphoma study.

Very likely endogenous (observed in <5% of human samples)

3

II

Cornea^19,17

B

0%

4

II

Sebaceous glands, airway epithelium¹⁹

Conjunctiva¹⁷, cornea⁵

B

4%

7

II

Glands¹⁹

Central basal cornea¹⁷No found²⁰

-

0%

8

II

Glands¹⁹

Cornea²¹, conjunctiva¹⁷

-

0%

11

I

Epidermis¹⁹

-

0%

12

I

Cornea^19,2

C

0%

13

I

Glands, airway epithelium^19,2

Conjuntiva²⁵, cornea⁵

B

2%

15

I

Basal keratinocytes²

Limbal basal⁷

L

2%

17

I

Hair follicle, nails²

Cornea¹⁷

-

0%

18

I

Glands, simple epithelium^19,2

Cornea²¹

-

0%

19

I

Glands, airway epithelium¹⁹

Conjunctiva⁴, basal limbus²

L

0%

20

I

Gastrointestinal tract epithelium²

-

0%

23

I

Non (found in pancreatic tumours)²²

-

0%

Uncertain endogenous (observed in >5% of human samples)

1

II

Epidermis¹⁹

B

36%

2e

II

Epidermis¹⁹

B

78%

5

II

Epidermis, glands, airway epithelium, hair follicles¹⁹

Conjuntiva²⁵, cornea^{19, 24}

B

3%

6A

II

Glands, airway epithelium, hair follicles¹⁹

B

27%

9

I

Palmoplantar epidermis²

B

99%

10

I

Epidermis¹⁹

B

75%

14

I

Epidermis, glands, airway epithelium, hair follicles¹⁹

Conjuntiva²⁵, cornea¹⁷

B

18%

16

I

Epidermis¹⁹

Cornea⁴

B

6%