Red Blood Cells (IMAGE) University of California - San Diego Caption The continuous, necessary production of blood cells, including these red blood cells captured in a scanning micrograph by Thomas Deerinck, is the responsibility of hematopoietic stem cells found in bone marrow. Credit Thomas Deerinck, UC San Diego Usage Restrictions Must credit Thomas Deerinck at UC San Diego License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.