Fig. 1. Korean red ginseng (KRG) increases Cyp11a1 expression in the old rat testes. Total RNA was isolated from testes of young rats (2 months old), old rats (16 months old) and old rats administered KRG for 4 months, then 5 μg of isolated RNA was converted to cDNA using a reverse transcriptase. Quantification of mRNA levels were carried out by reverse-transcriptase polymerase chain reaction using β-actin as a control. Each lane represents an RNA sample isolated from a single rat testes. O, old rat; O+G, old rat administered KRG; Y, young rat. *p<0.05.
