2421
HC - toxin exerts a potent cytostatic effect on plant and animal cells by inhibiting histone deacetylase .
 GENE: HC - toxin; GENE: histone deacetylase
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: HC - toxin; GENE: histone deacetylase