In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Immunoprecipitation of cell lysates with anti - phosphotyrosine and immunoblotting showed phosphorylated forms of the mitogenic pathway proteins Shc and MAPK in addition to p185 ( neu ) , suggesting that the Ras to MAPK mitogenic pathway is activated .
anti - phosphotyrosine