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Here are the clues. Preceding each clue is the number of letters in the answer.

Clue 1: 10 letters. Term for white blood cells
Clue 2: 8 letters. Function of white blood cells
Clue 3: 11 letters. Help with allergic responses
Clue 4: 11 letters. Good at the process of phagocytosis
Clue 5: 9 letters. Intensify allergic reactions
Clue 6: 10 letters. First responders, great for bacteria infection
Clue 7: 11 letters. Help with viral infections