1705
Although in vivo studies have shown that such inhibition stems from complex interactions of immune cells and the production of IFN - gamma and other downstream angiostatic chemokines , the mechanisms involved are still poorly defined .
 Anatomy: immune cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: immune cells 
Answer:
 Anatomy: immune cells