The National Institutes of Health (NIH) is inviting applications for the Ruth L. Kirschstein National Research Service Award (NRSA) Individual Senior Fellowship (Parent F33), aimed at experienced scientists looking to shift their research focus or enhance their skills as independent investigators in health-related fields. This fellowship specifically excludes proposals for leading independent clinical trials but permits involvement in clinical trials led by others, thereby fostering a diverse and skilled biomedical research workforce. Eligible applicants include a wide range of institutions and organizations, with awards typically covering stipends, tuition, and institutional allowances for a duration not exceeding two years. Interested candidates must submit their applications by December 8, 2023, and can find more information at NIH Grants or contact NIH Grants Information at grantsinfo@nih.gov for further inquiries.