Why do targaryens have dragon blood?

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Tags

1. #ordinary
2. #families
3. #blood
4. #dragon
5. #valyrian
6. #specifically
7. #valyria
8. #tolerate
9. #immune
10. #people
11. #dragonlord
12. #however
13. #targaryens
14. #traits
15. #phrase
16. #refers
17. #forty
18. #descent