BACKGROUND
To examine glutathione S-transferase M1 (GST M1) gene polymorphism and male infertility in Taiwanese patients with varicocele, 80 young male patients with varicocele (group 1), 62 young male patients with subclinical varicocele (group 2) and 60 normal young males (group 3) were recruited in this study.
METHODS
GST M1 null homozygous genotype [GST M1-] and the occurrence of a 4977 b...
