tokens: Animals were divided into six equal groups as follows : ( 1 ) no oral drug ( water ) , no hemodilution , no IV drug ( saline ) ; ( 2 ) oral water , hemodilution , IV saline ; ( 3 ) oral water , no hemodilution , IV propranolol ; ( 4 ) oral water , hemodilution , IV propranolol ; ( 5 ) oral propranolol , no hemodilution , IV saline ; and ( 6 ) oral propranolol , hemodilution , IV saline .