NIGMS accepts only R21 applications that are submitted in response to one of the following program announcements:

• PA-03-100, Exploratory Studies for High Risk/High Impact Research. Inquiries regarding programmatic issues can be directed to Dr. James C. Cassatt, Dr. Judith G. Greenberg, or Dr. Michael E. Rogers.

• PA-03-058, Exploratory/Developmental Bioengineering Research Grants. Programmatic questions regarding this announcement can be addressed to Dr. Warren Jones.

• PAR-03-045, Nanoscience and Nanotechnology in Biology and Medicine. Address programmatic questions to Dr. Catherine Lewis.

• PA-02-124, Basic and Preclinical Research on Complementary and Alternative Medicine (CAM). Address programmatic questions to Dr. Michael Rogers.