0301 basic medicine negative fraction Cancer Research Stromal cell medicine.medical_treatment Immunology CD34 Fraction (chemistry) Hematopoietic stem cell transplantation 03 medical and health sciences 0302 clinical medicine Text mining medicine Immunology and Allergy Genetics (clinical) Transplantation business.industry Mesenchymal stem cell − Cell Biology 030104 developmental biology medicine.anatomical_structure Oncology 030220 oncology & carcinogenesis hematopoietic stem cell transplantation Cancer research Bone marrow mesenchymal stromal cells business engraftment