Match the immune cell with its main function. dendritic cell...

Match the immune cell with its main function.
dendritic cell
B cell
helper T cell
NK cell
macrophage
a. professional phagocyte
b. antigen-presenter
c. activates other lymphocytes
d. makes antibodies
e. kills ailing body cells that lack MHC markers

Key Concepts

Antigen Presentation

Antigen presentation is a process in which specific cells process protein fragments from pathogens and display them on their surface bound to major histocompatibility complex (MHC) molecules. This is critical in triggering and guiding the adaptive immune response, enabling T cells to recognize and respond to potential threats effectively.

Antibody Production

Antibody production is a central feature of the humoral immune response, in which B cells differentiate into plasma cells that secrete antibodies specific to antigens. These antibodies bind to pathogens or toxins, neutralizing them or marking them for destruction by other immune cells.

Lymphocyte Activation

Lymphocyte activation involves the stimulation of immune cells through signals typically provided by helper T cells. This process is vital for orchestrating the immune response as it triggers the proliferation and differentiation of various lymphocytes, ensuring a robust and targeted defense against pathogens.

Phagocytosis

Phagocytosis refers to the ability of certain immune cells, such as macrophages, to engulf and digest cellular debris, pathogens, and foreign particles. This process not only eliminates harmful agents from the body but also prepares antigens for presentation to other immune cells, linking innate and adaptive immunity.

Cell-Mediated Cytotoxicity

Cell-mediated cytotoxicity is a mechanism by which specialized immune cells, such as natural killer (NK) cells, directly kill cells that are infected, stressed, or abnormal. NK cells play a crucial role in the innate immune system by recognizing and eliminating cells that have altered or reduced expression of MHC molecules.

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