Please see my presentation on pathways of apoptosis on my reseachgate profile.

Dear Prof. Sami,

There are 3 different mechanisms by which a cell commits suicide by apoptosis.

One generated by signals arising within the cell;

another triggered by death activators binding to receptors at the cell surface:TNF-αLymphotoxinFas ligand (FasL).

A third that may be triggered by dangerous reactive oxygen species.

Regards

SM Najim