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Tick the most appropriate answer.
Fill in the blanks.
Match the following.
| 1. strong sunlight | a. rashes |
| 2. pollen grains | b. vomiting |
| 3. dust | c. small blisters |
| 4. animal fur | d. sneezing |
| 5. insect sting | e. asthma |
| 6. eggs | f. hives |
Define allergy.
Define allergen.
Define allergist.