dolwinfitzz28
dolwinfitzz28 dolwinfitzz28
  • 23-01-2018
  • Health
contestada


“A specific reaction of the immune system to a foreign and frequently harmless substance” is an

A. inhaler.

B. arthritis.

C. allergy.

D. asthma.

Respuesta :

bfrane20
bfrane20 bfrane20
  • 23-01-2018
it should be c. allergy 
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