18392
Global analysis of Drosophila Cys2 - His2 zinc finger proteins reveals a multitude of novel recognition motifs and binding determinants .
 Chemical: Cys2; Chemical: His2; Chemical: zinc
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: Cys2; Chemical: His2; Chemical: zinc