TY - RPRT TI - Conceptual models to understand tissue stem cell organization. AU - Markus Loeffler AU - Ingo Roeder PY - 2004 DO - 10.1097/01.moh.0000133648.83991.af UR - https://pubmed.ncbi.nlm.nih.gov/15257023/ ID - 15257023 ER -