10717
An L - amino acid oxidase ( LAAO ) from Crotalus durissus cumanensis venom ( CdcLAAO ) was purified to homogeneity using a combination of size - exclusion and ion exchange chromatographies .
 L - amino acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 L - amino acid