passages.id: split_1_test_463_passage
passages.type: progene_text
passages.text: Blood and muscle T1 and T2 relaxivity was examined under normoxic ( air ; 20.8 % O2 ) and hyperoxic ( 100 % O2 ) conditions to determine whether the oxygenation state of blood in the large vessels and in the microcirculation can be monitored in vivo .