5151
( 19Z ) - HCA induced cell cycle arrest in the G2 / M phase , and this event was highly correlated with the expression of checkpoint proteins , including the up - regulation of p53 and GADD45 alpha and the down - regulation of cyclin B1 , cyclin A , CDC2 , and CDC25C .
 Chemical: ( 19Z ) - HCA
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: ( 19Z ) - HCA