LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

SIGNALLING IMMUNOLOGY CANCER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Specialized cells located in various tissues that help initiate the immune response by recognizing, “processing”, and presenting Ag to other cells of the immune system are known as?
A
Dendritic Cells
B
Phagocytes
C
Antibodies
D
Antigens
Explanation: 

Detailed explanation-1: -Dendritic cells (DCs) are professional antigen presenting cells that inform the fight against invasive pathogens while enforcing tolerance to self and harmless environmental antigens. They capture pathogens and receive signals from pathogens that influence the outcome of immune responses.

Detailed explanation-2: -Dendritic cells (DC) are responsible for initiating all antigen-specific immune responses. As such, they are the master regulators of the immune response and serve this function by linking the microbial sensing features of the innate immune system to the exquisite specificity of the adaptive response.

Detailed explanation-3: -Keratinocytes. Keratinocytes are the predominant cells in the epidermis. They act as the first line of innate immune defence against infection. They express Toll-like receptors (TLRs), which are pattern-recognition receptors (PRRs) that detect conserved molecules on pathogens and trigger an inflammatory response.

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