Rat Bone Marrow Progenitor Cells are derived from the tibias and femurs of 1-week old Sprague Dewley Rat. Rat Bone Marrow Progenitor Cells are grown in T25 tissue culture flasks pre-coated with gelatin-based solution for 0.5 hour and incubated in Creative Bioarray's Culture Complete Growth Medium generally for 3-7 days. Cultures are then expanded. Prior to shipping, cells are detached from flasks and immediately cryo-preserved in vials. Each vial contains at least 1x10^6 cells per ml and are delivered frozen. Standard biochemical procedures performed with progenitor cell cultures include cell adhesion, migration, RT-PCR, Western blotting, immunoprecipitation, immunofluorescent staining or immunofluorescent flow cytometry or generating cell derivatives for desired research applications.