
<b>Chemosensitivity or Extreme Drug Resistance requires live tissue cells for testing.</b>
We have been doing throat cultures and pus cultures for decades. Finding out what will kill the bugs and what won't has been the ''standard of care'' in infectious disease for yonks. Why can't we grate some fresh cancer tumor, grow tissue cultures of the tumor, and then sprinkle different chemotherapy agents over the cultures...to see what kills the growing cells, and what doesn't?

We CAN do this. There are different methods including, among others, the human tumor colony-forming assay (HTCA), the succinate dehydrogenase inhibition (SDI) test, the fluorescent cytoprint assay, the adenosine triphosphate assay (ATP assay), Differential Staining and Cytotoxicity (DiSC) Assays, and the MTT assay. It is a bit more complicated than making cookies, but the live tissue cultures of the cancer can be used to do the following: