Word: antigenically
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...Some guys can take a bye. Most men ages 50 to 70 probably don't need annual testing for PROSTATE CANCER. Researchers say men can safely wait two years if their blood level of prostate-specific antigen (PSA) measures below...
...Zeroing in on PROSTATE CANCER? An experimental blood test may be able to detect 95% of prostate cancers--and avoid unnecessary biopsies. Unlike today's screening test, which measures the total level of prostate-specific antigen, the new one homes in on just one important form...
TARGETING TOXINS Not so long ago, doctors thought they had finally found that long-awaited magic bullet in the war against cancer. Their great hope bears the impressive name of monoclonal antibodies, which are proteins that bind to--and attack--a particular target, usually another protein known as an antigen. But while natural antibodies go after antigens on the surface of viruses and bacteria, the artificial monoclonal antibodies are constructed to attack antigens that the immune system does not ordinarily recognize as dangerous, such as those displayed by tumor cells. Moreover, these antibodies (dubbed monoclonal because they are identical...
...include remarks from specialists in the field. Radiation is a standard therapy for this disease and is performed as often as surgery. Results from several major institutions show that 40% to 60% of all patients treated with radiation for all stages of prostate cancer have a favorable prostate-specific antigen test five years after treatment. Results for patients who are comparable to surgical candidates are even better. The American Urological Association analyzed all the available data on radiation and surgery and concluded "there was no clear-cut evidence for the superiority of any one treatment." Please set the record straight...
Thank you for your report on prostate cancer [MEDICINE, April 1]. Many think it is a disease of older men, but there has been a very rapid increase in prostate cancer in younger men. I was 48 when I asked for a diagnostic prostate-specific antigen test, even though my physician at the time did not recommend that I consider a PSA until I was 50. The tumor that was discovered was large and aggressive, but I am hopeful that my surgery was in time. Currently, researchers are looking mainly at older patients. We also need to focus more attention...