sentence: L740093 was a gift from Dr R. Freidinger ( Merck Sharpe and Dohme , Rathway , New Jersey ) , AG1024 was obtained from Calbiochem ( Darmstadt , Germany ) , human unsulfated heptadecapeptide gastrin ( hG17 ) from Bachem ( St Helens , Merseyside , UK ) , Click ‐ iT EdU Imaging kit from Invitrogen ( Paisley , UK ) , CCK2R antibody from Atlas Antibodies ( HPA041976 ; Stockholm , Sweden ) , fluorescein ( FITC ) ‐ conjugated AffiniPure donkey anti ‐ rabbit IgG was from Jackson ImmunoResearch ( West Grove , PA ) , Fluo ‐ 4 AM and Pluronic F ‐ 127 from Thermo Fisher Scientific ( Waltham , MA ) and other chemicals from Sigma ‐ Aldrich ( Poole , Dorset , UK ) , Immunocytochemistry .