Department of Health and Human Services (DHHS) - which includes, primarily, the National Institutes of Health (NIH)
Foundations - (such as the American Heart Association)
Industry - clinical trials sponsored primarily by companies such as Genetech
All other – this includes research sundry funds and non-research sundry funds. Sundry funds are gifts or other discretionary money used for research. Non-research sundry funds are also known has academic research funds which help with faculty development and education.