Question

The following characteristics describe strategies by the immune system to fight worm infections in the gut, EXCEPT:

a. Pushing B-cells to make IgE antibodies instead of IgM antibodies

b. Initiation of CD4 T-cell responses with specialized help against worms

c. Generation and delivery of neurotoxins to paralyze the worms

d. Blockade of mast cell degranulation to avoid concomitant allergies

Answer 1

Ans. c.

All the strategies are employed by the immune system except c. to fight infection by worms in the gut.

The immune system does not generate neurotoxins because this can cause harm to the human body itself. Any kind of neurotoxin directly affects humans and can acidify the tissues. Also, it can predispose body to metastasis. Immune response is designed in such a way that least harm is caused to the body and most harm is caused to the foreign body. Hence, the answer is option c.