why are HeLa cells considered immortal?

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  • 1 decade ago
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    they have telomerase which prevents degradation of the telomeres. Telomere length appears to be part of the cessation of cell division. Telomeres get progressively shorter in normal cells until they reach a point where the cell determines that any shorter is hazardous. These cells will also cont. to divide as long as their metabolic requirements are met otherwise they will die just like anyother cell.

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  • sergi
    Lv 4
    3 years ago

    Which Cells Are Considered Immortal

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  • 4 years ago

    No you have no need to worry. They are not your body's cells. Any foreign matter that enters the body is quickly attacked by the immune system. Cancer is deadly because it is your body's OWN cells that go 'wrong', and by the time the immune system realizes it, it's often too late. You cannot spread cancer from a foreign body cell to your own body cells, even if this 'foreign cell' is from a close relative. Cancer comes from a mutation or some other event occuring in a cell of your body. They are 'immortal' only in a sterile lab environment. Introduced into an animal or human, they would be destroyed by antibodies within minutes. The only things you should be concerned about working with are microbes that neither your immune system nor medicine can fight e.g. HIV, Ebola virus, etc.

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  • 1 decade ago

    bcz they dnt die but keep on dividing n the parent cell doesnt die

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