18620
Based in phosphatidylserine exposure on the cell membranes we show that BSC treatment resulted in enhanced cell death in leukaemia CCRF - CEM cells .
 Chemical: phosphatidylserine; Chemical: BSC
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: phosphatidylserine, BSC 
Answer:
 Chemical: phosphatidylserine; Chemical: BSC