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Question

Which of the following does not belong with the others?

A
Antigen - MHC forms
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B
Helper T-cell recognizes B- cell
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C
B-cell recognizes soluble antigen
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D
Antigen - presenting cell digests antigen
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Solution

The correct option is A Antigen - MHC forms
There are 2 forms of MHC, namely MHC class I and class II proteins. They play important role in the adaptive immunity. They present peptides on the cell surface for recognition by T cells. Helper T cells are part of adaptive immunity. They recognize and activate B cells to secrete antibodies and macrophages to destroy foreign bodies. They also help activate cytotoxic T cells to kill infected target cells. B cells are part of humoral immune response. They recognize soluble antigens. Antigen-presenting cell (APC) are those cells with detects, engulfs and digests antigen.
Thus, the correct answer is 'Antigen - MHC forms.'

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