... Staining of sPLA2-IIA in an inactive RA tissuewas rare, and only a few synovial lining regions (dark arrowheads)showed weak immunoreactivity (A) . In an active RA tissue (B–E),sPLA2-IIA was ... K, Shimbara S, Lambeau G,Gelb MH, Singer AG, Sawada M, Inagaki N, Nagai H,Ishihara M et al. (2002) Cellular arachidonate-releasingfunction and in ammation-associated expression ofgroup IIF ... sPLA2-V in three active RA tissues. In all cases, intense staining of the granulation tissue in the sublining interstitium was evident. Staining of the granulation tissue and lymphaggregates...