PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11812656-4 2002 Among the six cAMP PDEs (PDE1B, PDE3B, PDE4A, PDE4B, PDE4D, and PDE7) examined in WSU-CLL, only PDE7A levels were augmented by treatment with methylxanthines. methylxanthine 142-157 phosphodiesterase 4A Homo sapiens 39-44