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.

Normal mouse B cells and a variety of B lymphoma cells reflective of stages of B cell differentiation ( e . g . , 70Z / 3 , CH31 , WEHI - 231 , CH12 , and J558 ) express PPAR - gamma mRNA and , by Western blot analysis , the 67 - kDa PPAR - gamma protein .
PPAR - gamma