Programmed cell death. It is designed to prevent old damaged cells from mutating into neoplastic (cancer) cells.

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Regarding benign tumors and what 'stops' them

Benign tumors can grow to dangerous size yet are they capable of metastisizing ; if not what stops this? Also with a benign tumor if you call its cells 'near' its edges its tumor 'cell wall' I was ...
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What models are used for the different pathways of apoptosis?

We are trying to find references for experimental models of different pathways of apoptosis (caspase-dependent and -independent intrinsic apoptosis, death receptor type-1 and -2 mediated apoptosis, ...
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To understand Nitric oxide, iNOS and Tumour cells

I have this figure about nitric oxide and tumor which is for schematic for me to understand it The figure should probably say that tumour cell is induced by NO or alone to go apoptosis and it ...