Entest Group Inc

[$Pistol Pete$]

It is important to note that cancer stem cells
have unique properties from other tumour cells
that renders them particularly difficult to destroy.
For example, the cancer stem cell is normally
regarded as a non-cycling cell thus making it
resistant to chemotherapy and radiotherapy that
targets the cycling cells.

http://www.entb.net/imagelib/pdf/hitting-the-right-target-ebr-autumn-2010-p84-7.pdf