26678
Exposures of 75 and 150 mu M Cu ( 2 + ) caused toxicity symptoms ( chlorosis , necrosis and rolling in leaves ) , sharp increases in malondialdehyde ( MDA ) , hydrogen peroxide ( H2O2 ) contents and lipoxygenase ( LOX ) activity with concomitant reductions of chlorophyll ( Chl ) and relative water content ( RWC ) .
 Chemical: Cu ( 2 + ); Chemical: malondialdehyde; Chemical: MDA; Chemical: hydrogen peroxide; Chemical: H2O2
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: Cu ( 2 + ); Chemical: malondialdehyde; Chemical: MDA; Chemical: hydrogen peroxide; Chemical: H2O2