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.

[Q]:  The unagglutinated thymocytes ( peanut negative ) contained about 2 times more receptor sites per cell than agglutinated ( peanut positive ) ones ( 7650 + / - 1550 S . D . verus 3195 + / - 896 S . D . ) .
[A]: receptor sites


[Q]:  In contrast to B cells from XID mice , B cells from JAK3 knockout mice showed a normal STAT5A phosphorylation response to anti - IgM stimulation .
[A]: anti - IgM


[Q]:  Reporter - plasmids are transfected into thymocytes in fetal thymic organ culture by accelerated DNA / particle bombardment ( gene gun ) , and the activation of a signaling pathway is determined in the form of a standard luciferase assay .
[A]:
Reporter - plasmids