Before being tested in animals or humans, most cancer drugs are evaluated in tumor cells grown in a lab dish. However, in recent years, there has been a growing realization that the environment in which these cells are grown does not accurately mimic the natural environment of a tumor, and that this discrepancy could produce inaccurate results. Read more . . .
Biologists have found that the nutrient composition of the interstitial fluid that normally surrounds pancreatic tumors is different from that of the culture medium normally used to grow cancer cells.