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.
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Question:  METHODS : Levels of sIL - 2R were measured simultaneously in plasma and pleural fluid in 111 patients with pleural effusions of unknown causes .

Answer: sIL - 2R


Question:  With this study , a total of 13 operators for the glp regulon have been characterized .

Answer: glp regulon


Question:  Following EGF or NGF stimulation of the v - CrkPC12 cells , the v - Crk protein itself became tyrosine phosphorylated within 1 min .

Answer:
v - Crk