PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14990976-5 2004 By varying the concentration of tetracycline in growth media, we found that increasing levels of MLL-AF4 expression result in a progressive decrease in growth rate and fraction of S phase cells, paralleled by an increase in percentage of cells expressing CD11b. Tetracycline 32-44 AF4/FMR2 family member 1 Homo sapiens 101-104