5810
Wild - type islets beneath the renal capsule of Gcgr ( - / - ) or Gcgr ( Hep ) ( - / - ) mice exhibited an increased rate of alpha - cell proliferation and expansion of alpha - cell area , consistent with changes exhibited by endogenous alpha - cells in Gcgr ( - / - ) and Gcgr ( Hep ) ( - / - ) pancreata .
 None
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:  
Answer:
 None