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:
 Plasma prolactin concentrations during incubation , 25 . 8 + / - 2 . 3 ng / ml , decreased to baseline levels , 10 . 8 + / - 1 . 9 ng / ml , within 24 hr after nestbox removal .
answer:
Plasma prolactin


question:
 The remaining 77 nucleotides at the 3 ' end of domain II and all of domains III ( 655 nucleotides ) and IV ( 770 nucleotides ) are not present in DIssE RNA .
answer:
DIssE RNA


question:
 A mammalian protein called RFX or NF - X binds to the X box ( or X1 box ) in the promoters of a number of major histocompatibility ( MHC ) class II genes .
answer:

NF - X