Figure 2. RT–PCR analysis of specific CERKL isoforms in several human tissues. For each tissue, lane 1 shows amplification of isoforms a (fast migrating band) and b (slow migrating band), whereas lanes 2 and 3 show the amplified product of isoform c and d, respectively. In the second gel, “f” represents fetal tissue. Marker band sizes are indicated in base pairs (bp). The additional faint bands in lane number 1 correspond to heteroduplexes of the PCR products.