instruction:
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.
question:
 The level of expression of the PDE protein was monitored by immunoblot analysis using two specific cAMP - PDE polyclonal antibodies and by measuring the PDE activity .
answer:
PDE protein


question:
 Cellular lysates were analyzed for luciferase and beta - galactosidase activities .
answer:
beta - galactosidase


question:
 Second , CGGA - containing sequences placed at - 88 in the delta MTV - CAT reporter plasmid conferred insulin responsiveness to the mammary tumor virus promoter .
answer:

CAT reporter