NIH requires those receiving NIH funds to deposit their final peer-reviewed journal manuscripts in the PubMed Central digital archive upon acceptance for publication. The Policy further requires that these papers be made accessible to the public in PubMed Central no later than 12 months after publication. Many publishers facilitate compliance.
For "major" authors of original research articles, who are HHMI laboratory heads, investigators and/or group leaders, deposition in an open access repository is required. While not required for all HHMI grantees, their compliance is encouraged. To facilitate deposition, the HHMI has developed an interface to PubMed Central. Other repositories are also acceptable, as appropriate. Articles must be made freely available within six months of publication.