does bone marrow grow back
Best Answer: Less than 10 percent of the patient/donor's stem cells are removed and the donor's marrow will grow back quickly.....Most patient/donors are released in the evening on the same day of the harvest or the following day.t has to, other wise there the new stem cells wont engraft. (there are some proceedures call a 'mini' transplant thats a lil different, but...). It is possible for the person's own marrow to grow back, but it is very very very very rare.