1977
Our results indicated that the mechanism of cell death involves cytochrome c release forming the apoptosome together with Apaf - 1 and caspase 9 , converting the caspase 9 into its active form , allowing it to activate caspase 3 as observed by immunofluorescence .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None