5261
Previous studies have shown that v - erbA and v - myb can induce the proliferation of avian erythroid cells in culture .
 Anatomy: erythroid 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: erythroid cells 
Answer:
 Anatomy: erythroid cells