Fill 10cc syringe with prewarmed Complete conditioned media and attach 25 gauge needle. With forceps, grab one bone.
Use syringe to force media through bone shaft to extract all red marrow into 150mm plate.
Can flip bone over and do from opposite side.
Repeat a few times to ensure all marrow is removed.
Bone should look very white when finished.
Continue until all bones are demarrowed.