5818
We have investigated the role of cellular p21ras protein in insulin and insulin - like growth factor - I ( IGF - I ) signaling pathways .
 cellular p21ras protein, insulin, insulin - like growth factor - I, IGF - I
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 cellular p21ras protein, insulin, insulin - like growth factor - I, IGF - I