The National Institutes of Health (NIH) has announced a funding opportunity titled "Development of Alternative Human Models of Radiation-Induced Injuries (Extracorporeal Systems)" aimed at supporting research into acute and delayed radiation injuries. This initiative seeks to develop innovative extracorporeal systems that accurately replicate human responses to radiation, facilitating the exploration of injury mechanisms and the testing of medical countermeasures. The funding, structured as a U01 cooperative agreement, has a total budget of $4 million, with plans to award six to eight grants in FY 2026. Interested applicants should note that the submission deadline is February 7, 2025, and they can reach out to NIH Grants Information at grantsinfo@nih.gov for further inquiries.