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A 36-year-old member asked:

what are natural killer cells?

2 doctor answers5 doctors weighed in
Dr. Efren Rael
Allergy and Immunology 18 years experience
Immune cells: Natural killer cells are immune effector cells that are efficient in killing virus infected cells. They can be divided into 2 sets: CD56bright (produce antiviral agents and help a subset of T cells) and CD56dim (fully mature, can destroy antibody targeted cells). There is a 3rd, dysfunctional subset that has been described in HIV.
Dr. Gurmukh Singh
Pathology 49 years experience
Type of blood cell: Natural killer cells are one type of white blood cells that can destroy cancer cells and virally infected cells without the need for prior exposure to the relevant antigens.

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A 30-year-old member asked:

Anyone know about natural killer cells?

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 49 years experience
Anti-tumor cells: These cells can kill tumor and virally infected cells without the need for prior exposure to relevant antigens. Such cells are present in the blood of all normal individuals. Mechnisms to boost the actitity of nk cellls is the subject of research in cancer treatment.
A 40-year-old member asked:

What r natural killer cells?

1 doctor answer1 doctor weighed in
Dr. Joseph Woods
Pathology 28 years experience
Cells that kill.: These are cells of the immune system that kill other cells that represent a danger to the body, like virally infected cellls and cancer cells. They have a natural ability to recognize stressed cells and can kill these without need of antibody or major histocompatability complex alteration to prime them, hence their name. Thus, they can present a much faster response than other immune cells.
CA
A 28-year-old male asked:

What is the definition or description of: natural killer cells?

1 doctor answer2 doctors weighed in
Dr. Edward Eckert
A Verified Doctor answered
A US doctor answered Learn more
See answer details.: Natural killer (nk) lymphocytes have the ability to kill various abnormal cells such as those damaged by trauma, aging, viruses and possibly cancer cells. Nk cells do not need to be stimulated ("primed") by previous recognition of the cell, antibodies or lymphokines; they are stimulated by interferon.
United Kingdom
A 32-year-old female asked:

Do you belive the hype about high natural killer cells and misscarage?

1 doctor answer1 doctor weighed in
Dr. Dimitri Novitzky
Thoracic Surgery 52 years experience
Natural killer cells and misscarage: Steroids, which are thought to work by reducing the percentage of NK cells in the womb, are commonly used as a treatment for recurrent miscarriage and do appear to help some women to go on to have a normal pregnancy. But many experts agree this is based more on empirical evidence that a firm scientific understanding.
Singapore
A 48-year-old female asked:

Is there a way to measure your immune system specifically natural killer cells?

1 doctor answer4 doctors weighed in
Dr. Kristin Sokol
Allergy and Immunology 12 years experience
Immunologist: Yes, there are screening tests for immune dysfunction, and also more specific tests if history is consistent with immune dysfunction and/or screening tests abnormal. NK cell dysfunction is rare. I would see an immunologist for further discussion and evaluation.

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Last updated Jun 19, 2016
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