PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19318315-0 2009 Low O2 concentrations enhance the positive effect of IL-17 on the maintenance of erythroid progenitors during co-culture of CD34+ and mesenchymal stem cells. Oxygen 4-6 CD34 molecule Homo sapiens 124-128 19318315-6 2009 The expression of some differentiation markers (CD34, CD13 and CD41) on haematopoietic cells in co-cultures also depends upon the oxygen concentration. Oxygen 130-136 CD34 molecule Homo sapiens 48-52