1.   Among the companies presenting research will be Matrix Pharmaceutical of Fremont, Calif., which is in the final stage of testing a new chemotherapy agent.

2.   By contrast, tumors often become resistant -- that is, the drugs become ineffective -- when conventional chemotherapy agents that had originally been effective are administered again.

3.   Gemzar represents a new type of chemotherapy agent that is injected into the body in an inactive form.

4.   In addition, both women received a four-fold overdose of a different drug, Mesna, which protects the bladder against damage from the chemotherapy agents.

5.   Novantrone, like many chemotherapy agents, is an immunosuppressant.

6.   One bonus of Taxol is that, unlike most chemotherapy agents, it rarely causes severe nausea.

7.   San Ramon-based SuperGen Inc. is asking for FDA permission to market a new version of mitomycin, a generic chemotherapy agent.

8.   The mitomycin C is a well-known chemotherapy agent that attacks dividing cells by entangling their DNA strands with chemical cross-links.

9.   Bezwoda claimed to use different chemotherapy agents than U.S. researchers, prompting speculation that maybe different drugs could produce better results.