Figure 4. Lack of LIF alters gene
expression after light exposure. Relative levels of mRNAs (as
indicated) were analyzed by real-time PCR in retinas of Lif+/–
and Lif–/– mice before (controls) or at 12 h after
exposure to 15,000 lx of white light for 2 h. RNA levels were
expressed relative to levels in Lif+/– controls,
which were set to 1. β-actin served as reference gene for the
relative quantification. Bars show mean values±SD (n=3).