BM	basal medium
CA	central area
CSF	controlled slow freezing
D	day
dpp	days post-partum
FCS	fetal calf serum
F-T	frozen-thawed
GSH	reduced glutathione
h	hour
HE	hematoxylin eosin
H2O2	hydrogen peroxide
IA	intermediate area
KSR	KnockOut Serum Replacement
LN2	liquid nitrogen
L/Z	leptotene/zygotene
min	minutes
P	pachytene
PA	peripheral area
PAS	periodic acid Schiff
Rol	retinol
ROS	reactive oxygen species
s.e.m.	standard error of the mean
SSC	spermatogonial stem cell
Vit E	vitamin E