Across
- 2. substance that causes an allergic reaction
- 3. high-pitched, whistling sound heard on expiration
- 5. small areas of generalized itching; hives
- 8. the act of injecting venom
- 9. commonly called adrenaline
- 10. raised, swollen area on skin resulting from bite
- 11. chemicals released by immune system
Down
- 1. localized area of swelling beneath the skin
- 4. harsh high-pitched respiratory sound
- 6. harmful substance produced by living cells
- 7. extreme life-threatening allergic reaction