Intracel Corp.

RATIONALE: Vaccines made from a patient's white blood cells and tumor cells may make the body build an immune response to kill tumor cells. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining vaccine therapy with chemotherapy may kill more tumor cells.
PURPOSE: Phase I/II trial to study the effectiveness of vaccine therapy combined with leucovorin and fluorouracil in treating patients who have undergone surgery to completely remove stage II or stage III colon cancer.

RATIONALE: Biological therapies use different ways to stimulate the immune system and stop cancer cells from growing. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. It is not yet known whether keyhole limpet hemocyanin is more effective than doxorubicin for bladder cancer.
PURPOSE: Randomized phase III trial to compare the effectiveness of keyhole limpet hemocyanin with that of doxorubicin in treating patients who have bladder cancer that has not responded to BCG or in those patients who cannot tolerate BCG.