Table 1. Primers used for amplification of cDNA of the glutamate receptor isoforms, actin, rod-opsin, mGluR6, and melanopsin

For most genes two sets of nested primers were used. The length of the amplicon in base pairs refers to the inner polymerase chain reaction product. The primers for the NMDA receptor subtypes were as described by Paarmann [24], with the exception of the inner primers for NR2b and NR2c. The primers for mGluR6 were as described by Maxeiner [25].