2320
Erythrocytes lack mitochondria and nuclei but may enter apoptosis - like eryptosis , a suicidal cell death characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the cell surface .
 Chemical: phosphatidylserine
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: phosphatidylserine