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.

 Accelerated spontaneous thymocyte death in the absence of TCF - 1 correlates with aberrantly low expression of the anti - apoptotic protein Bcl - x ( L ) .
TCF - 1

 In epithelial cells , defensin genes are found as both constitutively expressed and inducible .
defensin genes

 Treatment of leukemic LGL with the JAK - selective tyrosine kinase inhibitor AG - 490 induced apoptosis with a corresponding decrease in STAT - DNA binding activity .

tyrosine kinase

