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Natural killer (NK)
When a human has swollen lymph nodes just under the harm pit due to infected sores around the
fingers, what does that imply occurring in the lymph nodes? (2)



Answer :

GinnyAnswer

Final answer:

NK cells target and eliminate infected or abnormal cells in the lymph nodes, preventing further infection.


Explanation:

Natural killer (NK) cells are a type of lymphocyte that identify and kill infected or tumorogenic cells by recognizing the altered expression of major histocompatibility complex (MHC) I molecules on the surface of these cells. Swollen lymph nodes under the arm pit due to infected sores around the fingers imply that the NK cells are actively targeting and eliminating the infected cells in the lymph nodes.

  • NK cells induce apoptosis in infected cells, preventing the release of viruses and further infection.
  • NK cells play a crucial role in the innate immune response against viruses and cancer cells.
  • Healthy cells with intact MHC I molecules are ignored by NK cells, whereas infected or abnormal cells are targeted for destruction.

Learn more about natural killer cells here:

https://brainly.com/question/31932680


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