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.

 T cells retained their physical parameters as measured by forward and side light scatter , and functional activity as measured by costimulation of proliferation and IL - 2 production after being scraped off this substrate .
IL - 2

 SUMO - 1 modification of PML is known to be required for the formation of PML bodies .
SUMO - 1

 Transcription factors are essential to govern differentiation along the lymphoid lineage from uncommitted hematopoietic stem cells .

Transcription factors