An _____ Is Any Foreign Substance That, When Introduced into the Body

Q3: _ provide defense against extracellular antigens like

Q4: The signs and symptoms of _ include

Q5: A _, or an abnormally high body

Q6: There are several different types of hypersensitivity.Type

Q7: As humans age, the _ atrophies, causing

Q9: The first exposure to an antigen triggers

Q10: Sjögren's syndrome can be classified as primary

Q11: _ is a chronic autoimmune disease that

Q12: Scleroderma is a chronic autoimmune disease of

Q13: Of the two major forms of scleroderma,