3045
Cu - dependent tyrosinase activity was also markedly reduced in both types of CLDN knockdown cells when incubated with the substrate l - DOPA .
 Chemical: Cu; Chemical: l - DOPA
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; Chemical: l - DOPA