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: Despite the importance of NF - kappaB to B cell function , little is known about the signaling pathways leading to NF - kappaB activation .

A: NF - kappaB
****
Q: Further , inhibition of Mcl - 1 by antisense oligonucleotides , also resulted in macrophage apoptosis .

A: Mcl - 1
****
Q: The B cell factor was purified to homogeneity using affinity chromatography and consists of three peptides of 62 , 61 , and 58 . 5 + / - 1 . 5 kd .

A:
B cell factor
****