Researchers at the University of Minnesota have been awarded three million dollars from The National Institutes of Health. The money will fund a four-year study to learn why some patients see little improvement from treatments for H-I-V, the virus that causes AIDS. Dr. Timothy Schacker is the principle investigator for the new study. He says the NIH money will allow researchers to investigate why damage to the lymph nodes prevents the immune system from responding to anti-retroviral therapy.