Knowledge of Health provides a review of cancer treatment that is leading up to human clinical trial in the summer 2008 where cancer-killing granulocytes obtained from humans who exhibit high immunity against cancer will be injected into cancer patients. The review is selective and the author believes that vitamin D would also help with some cancer treatment.
Dr Cui took blood samples from 100 volunteers, and mixed just their granulocytes with cervical cancer cells in the laboratory. He found that one sample appeared to kill 97% of the cancer cells in just two days, while at the other end of the scale, after 48 hours, one sample had destroyed just 2% of the cancer cells.
[from wikipedia] Granulocytes are a category of white blood cells characterised by the presence of granules in their cytoplasm. They are also called polymorphonuclear leukocytes (PMN or PML) because of the varying shapes of the nucleus, which is usually lobed into three segments. In common parlance, the term polymorphonuclear leukocyte often refers specifically to neutrophil granulocytes, the most abundant of the granulocytes.
Zheng Cui, MD PhD webpage at Wake Forest University