Fig. 4.
RT-PCR analysis of anole hard keratin expression. RNA was prepared from various organs of A. carolinensis and analyzed by RT-PCR with keratin-specific primers. The ubiquitously expressed protease caspase-3 was amplified as a control (Con.) for the quality of the RNA preparations. PCRs without cDNA template were performed to control for purity of reagents (lane “control”).