6115
Accordingly , rattus cardiomyocyte line , H9C2 , was treated with H ( 2 ) O ( 2 ) as a heart ischemia - reperfusion model followed by incubation with low molecular weight hyaluronan ( LMW - HA , 100 kDa ) or high molecular weight hyaluronan ( HMW - HA , 1000 kDa ) and proteomic analysis was performed to investigate the physiologic protection of HA in H ( 2 ) O ( 2 ) - induced ischemia - reperfusion in cardiomyocyte .
 Chemical: H ( 2 ) O ( 2 ); Chemical: H ( 2 ) O ( 2 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: H ( 2 ) O ( 2 ); Chemical: H ( 2 ) O ( 2 )