What is the liquid in a blister?

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Tags

1. #freezing
2. #exposure
3. #pocket
4. #blood
5. #either
6. #serum
7. #clear
8. #burning
9. #rubbing
10. #small
11. #upper
12. #blisters
13. #infection
14. #chemical
15. #layers
16. #typically
17. #plasma
18. #forceful
19. #within
20. #lymph
21. #friction
22. #caused
23. #fluid
24. #filled
25. #blister