Sample R01 and R21 proposals

One question I am constantly asked is "How can I look at previously-funded research project proposals?"  Several new R21 applications were recently added to the examples provided by the National Institute for Allergies and Infectious Diseases (NIAID).  Looking over previously-funded R01 and R21 grant applications can help you to understand the elements of a successful proposal.  Review all of NIAID's sample proposals here.  Unfortunately there are not any R03 samples at this time, but the R21 and R01 examples will still be useful for you and can help you to see what goes into putting together a successful research strategy section.