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QUESTION
Q509) The cells which destroy worn out white and red blood corpuscles, bacteria and other microorganisms passing through liver are .... [ Bih PMT 2004 ]

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B cells are at the centre of the adaptive humoral immune system and are responsible for mediating the production of antigen-specific immunoglobulin (Ig) directed against invasive pathogens (typically known as antibodies).

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T cells play a major role in defence against intracellular pathogens such as viruses, protozoa and intracellular bacteria, and in immunity to extracellular pathogens by providing help for the antibody response.

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Oxytocin (Oxt) is a peptide hormone and neuropeptide. Oxytocin is normally produced in the hypothalamus and released by the posterior pituitary.
Oxytocin is a hormone that plays an important role in the female reproductive system, particularly with childbirth and breast-feeding.

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The function of Kupffer cells is to break down red blood cells through phagocytosis, liberating the globin chains and the heme component for further metabolic processing and re-use.
Kupffer cells also play an essential role in innate immunity. They are involved in phagocytosing blood-borne bacteria passing through the liver from the gut. They are also capable of producing cytokines, chemokines, and ROS. Therefore, they are capable of recruiting monocytes into the liver, as well as participate in the development of alcoholic liver damage (via ROS production).


Answer : (d)