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:
 Reactivity with the tegument protein encoded by UL21 was identified for an additional patient .
answer:
tegument protein


question:
 Pax5 appears to mediate B - lineage commitment by repressing the transcription of non - B - lymphoid genes and by simultaneously activating the expression of B - lineage - specific genes .
answer:
- B


question:
 In two lines ( OCI - AML - 1 , OCI - AML - 11 ) , TNF - alpha acted as an apoptotic agent ; in others ( HU - 3 , M - 07e , TF - 1 ) , it had the opposite effect , preventing apoptosis and inducing proliferation .
answer:

TNF - alpha