The Department of Health and Human Services, specifically the National Institutes of Health (NIH), is seeking qualified contractors to develop and maintain an Aged Rodent Tissue Bank (ARTB) to provide biospecimens from aged mice and rats for biomedical research. The primary objective of this initiative is to collect, store, and distribute approximately 40,000 frozen biospecimens annually to around 25 investigators, thereby enhancing research efficiency and resource sharing in the field of aging studies. The ARTB will play a crucial role in supporting various research protocols by ensuring the availability of preserved biological samples, which are essential for understanding aging and related diseases. Interested parties must submit their capability statements by August 7, 2025, to the designated contacts, Eric McKay at eric.mckay@nih.gov and nidacoaccommunications@nida.nih.gov, as this opportunity is not a solicitation for proposals but a request for information regarding potential sources.