ANATOMY

GENERAL ANATOMY

IMMUNE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
After an initial infection, B-cells recognize the measles virus. How is this helpful in human immune response?
A
The B-cells use this recognition to defend the body against other pathogens, such as bacteria.
B
The B-cells more quickly recognize and respond to any other virus that invades the body.
C
The B-cells produce antibodies more quickly if the measles virus is encountered again.
D
The B-cells transfer this recognition to T-cells, which will then devour the viruses.
Explanation: 

Detailed explanation-1: -After an initial infection, B-cells recognize the measles virus. How is this helpful in human immune response? A. The B-cells use this recognition to defend the body against other pathogens, such as bacteria.

Detailed explanation-2: -B cells create antibodies. These antibodies bind to pathogens or to foreign substances, such as toxins, to neutralize them. For example, an antibody can bind to a virus, which prevents it from entering a normal cell and causing infection.

Detailed explanation-3: -Measles has a complex interaction with the immune system through direct infection of B and T lymphocytes expressing CD150 that results in transient lymphocyte depletion followed by immune activation that generates life-long immunity to reinfection.

Detailed explanation-4: -What roles do memory B cells play when a patient is re-exposed to an antigen? Due to previous exposure, memory B cells are able to quickly recognize invading pathogens, dock with them, and induce apoptosis.

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