... [For example], A deficiency of lysosomal sialidase (Neu1) leads to increased levels of LAMP -1-mediated lysosomal exocytosis by neutrophils in the bone marrow cavity. (longecity.org)
Because the bone marrow must struggle to make enough hemoglobin, the marrow cavities enlarge, causing deformities especially in the facial bones. (scientificamerican.com)
Animal studies show that it directs the size of the marrow cavity in bones in rats. (drstevenlin.com)