3123
Here we report that components of the Ras / Raf / MAPK pathway are constitutively activated in these lck - transformed immature thymoblasts . p56 ( lck ) utilizes Shc and Grb2 adaptors to mediate activation of p21 ( ras ) in the thymoblast lines by promoting tyrosine phosphorylation of the Shc protein and constitutive interaction between Shc and Grb2 .
 GENE: Ras; GENE: Raf; GENE: MAPK; GENE: lck; GENE: p56; GENE: lck; GENE: Shc; GENE: Grb2 adaptors; GENE: p21; GENE: ras; GENE: Shc protein; GENE: Shc; GENE: Grb2
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: Ras; GENE: Raf; GENE: MAPK; GENE: lck; GENE: p56; GENE: lck; GENE: Shc; GENE: Grb2 adaptors; GENE: p21; GENE: ras; GENE: Shc protein; GENE: Shc; GENE: Grb2