PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 22140260-3 2012 In this study, using PCR to analyze the Ab response to phenyl-oxazolone in the mouse, we show that the Ab repertoire of CD21(hi)/CD23(-) marginal zone B cells shows persistent increase in levels of particular IgM after immunization with foreign Ag. 2-phenyloxazolone 55-71 complement receptor 2 Mus musculus 120-124