Table 1. Oligonucleotide primers used during real-time polymerase chain reaction

PRPH represents peripherin; STMA2 represents stathmin-like 2; SRPX represents sushi repeat-containing protein; ELAVL2 represents embryonic lethal, abnormal vision like 2; RBPMS represents RNA-binding protein gene with multiple splicing; GAPDH represents glyceraldehyde-3-phosphate dehydrogenase.