P-glycoprotein effluxes a variety of anticancer drugs , such as doxorubicin , vinca alkaloids , etoposide and taxol , and thereby allows cancer cells to show resistance to these drugs .
Therapeutic approach to drug resistant tumors. Drug resistance is a major problem in cancer chemotherapy. P-glycoprotein plays a major role in multidrug resistance in cancer cells. P-glycoprotein is expressed in some normal tissues and has physiological functions. These include protecting the brain against toxic substances at the blood-brain barrier site, excreting toxic substances from the liver, kidney, and gastrointestinal tracts, and transporting steroidal hormones in the adrenal grand. Once expressed in cancer cells. P-glycoprotein effluxes a variety of anticancer drugs , such as doxorubicin , vinca alkaloids , etoposide and taxol , and thereby allows cancer cells to show resistance to these drugs .
### Instruction:
            Given the context about compound efficacy for the given treatment mentioned within the input, mentioned the compounds 
            that can co-occur for the mentioned treatment

            ### Input:
            Therapeutic approach to drug resistant tumors. Drug resistance is a major problem in cancer chemotherapy. P-glycoprotein plays a major role in multidrug resistance in cancer cells. P-glycoprotein is expressed in some normal tissues and has physiological functions. These include protecting the brain against toxic substances at the blood-brain barrier site, excreting toxic substances from the liver, kidney, and gastrointestinal tracts, and transporting steroidal hormones in the adrenal grand. Once expressed in cancer cells. P-glycoprotein effluxes a variety of anticancer drugs , such as doxorubicin , vinca alkaloids , etoposide and taxol , and thereby allows cancer cells to show resistance to these drugs .

            ### Response:
            doxorubicin, etoposide
            