896
These results suggest that G beta gamma - stimulated Shc phosphorylation represents an early step in the pathway leading to p21ras activation , similar to the mechanism utilized by growth factor tyrosine kinase receptors .
 GENE: G beta gamma; GENE: Shc; GENE: p21ras; GENE: growth factor tyrosine kinase receptors
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: G beta gamma; GENE: Shc; GENE: p21ras; GENE: growth factor tyrosine kinase receptors