It helps your body get used to the allergen better. It just depends on the allergy.
Answer: IVIG
Explanation:
GUILLIAN BARRE syndrome the immune systems produces harmful antibodies that attack the nerves. IVIG is a treatment that contains healthy antibodies from donated blood and is the most commonly used treatment for this disease.
Answer: In 1858, Pasteur filtered air through a gun-cotton filter and, upon microscopic examination of the cotton, found it full of microorganisms.
I hope this helped!