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]:  Pax5 thus functions both as a transcriptional repressor and activator , depending on its interactions with corepressors of the Groucho protein family or with positive regulators such as the TATA - binding protein .
[A]: Groucho protein family


[Q]:  Two patients with Tac - positive adult T - cell leukemia have been treated with the anti - Tac .
[A]: anti - Tac


[Q]:  We found that the conversion of 70Z / 3 pre - B lymphocytes to cells with a macrophage - like phenotype is associated with the loss of E2A and EBF .
[A]:
- B