OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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lymphocytes; b-cells
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lymphycytes; helper t-cells
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macrophages; helper t-cells
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macrophages; b-cells
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Detailed explanation-1: -T cells are designed to recognise the molecular signatures of particular proteins, such as those from bacteria, in order to activate an immune response. Macrophages eat other cells and are able to pull apart their proteins in order to present them to T cells.
Detailed explanation-2: -Helper T Cells When presented with the peptide fragments of the processed antigens by APCs, CD4+T cells rapidly proliferate and secrete cytokines to direct the immune response in relevant pathways. The helper T cells can differentiate into several distinct subtypes, including Th1, Th2, Th3, Th17, or TFH.
Detailed explanation-3: -The activation of naive T cells in response to antigen, and their subsequent proliferation and differentiation, constitutes a primary immune response.