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:  One element is located in the intron between the variable ( V ) and constant ( C ) regions of both heavy and kappa light - chain genes and acts as a transcriptional enhancer .

A: transcriptional enhancer
****
Q:  p21ras and calcineurin synergize to regulate the nuclear factor of activated T cells .

A: nuclear factor
****
Q:  The distance travelled by leukocytes before arrest on 30 mM glucose , or on IL - 1beta - treated endothelial cells , was significantly ( P < 0 . 01 ) higher than that observed for leukocytes adhering on control endothelium ( 30 mM glucose : 76 . 7 + / - 3 . 5 ; IL1beta : 69 . 7 + / - 4 versus 5 mM glucose : 21 . 5 + / - 5 microm ) .

A:
IL - 1beta
****