passages.id: split_6_test_2031_passage
passages.type: progene_text
passages.text: For experiments 1 and 2 , mean +/- SD heparin activities before ( experiment 1 , 1.32 +/- 0.20 U / ml ; experiment 2 , 0.69 +/- 0.174 U / ml ) and 4 hours after the last heparin injection ( experiment 1 , 1.71 +/- 0.30 U / ml ; experiment 2 , 1.10 +/- 0.30 U / ml ) were higher than values calculated for the regimen used in experiment 1 .