Table 1.

Barx2 regulation of L1 promoter activity

Luciferase activity*
Construct	pcDNA3	pcDNA3-Barx2	-fold
LI-1	19500	5851	3.3 ↓
LI-14	2345	6455	2.8 ↑
LI-14ΔHBS	4913	2231	2.2 ↓

^*Values are expressed in raw light units and are derived from duplicate samples in four separate experiments in which the activities of constructs varied no more than 5%. 

↓, repression; ↑, activation.