PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1774039-2 1991 The results showed that the Rf value of Tc-99m-dl-HM-PAO (0.8-1.0) on silica G thin layer chromatography with MEK as solvent was different from that of Tc-99m-meso-HM-PAO (0.6-0.8), and that the retention of dl- isomer in the brain was higher and more static than those of meso-and mixture HM-PAO but identical with Ceretec, a dl-HM-PAO kit manufactured by Amersham Inc., England. Silicon Dioxide 70-76 midkine Mus musculus 110-113