In spite of generations of experience and all the thousands of case histories, cancer research has advanced at a turtle's pace. Doctors acknowledge the basic truisms that cancer is cell growth gone wild, that cases discovered early can sometimes be cured through X ray, surgery, radioactive substances. But beyond that, chains of ignorance still bind their hands.
This week at the University of Minnesota, two top-level professorsDr. Robert G. Green, expert in bacteriology and immunology, and Dr. John J. Bittner, geneticist and cancer biologistnailed up an important signpost in medicine's fight against cancer....