ROS	reactive oxygen species
TCA	trichloro acetic acid
AU-PAGE	acid-urea polyacrylamide gel electrophoresis
EMSA	electrophoretic mobility shift assays
EDTA	ethylenediaminetetraacetic acid
TEB	Tris-Borate-EDTA
SNBP	sperm nuclear basic protein
pDNA	plasmid DNA
DTT	dithiothreitol
L-group	man living in the low environmental impact areas
CP/Hr	canonical protamines/histones ratio
nCP/Hr	not canonical protamines/histones ratio
only-H	only histones and other basic proteins
TAC	total antioxidant capacity
GSH	glutathione
GSSG	oxidized glutathione
SC	sperm concentration
TSC	total sperm count
ICSI	intracytoplasmic sperm injection