aCGH	Array Comparative Genomics Hybridization
BMI	Body mass index
cAMP	cyclic Adenosine monophosphate
CCs	cumulus cells
COC	Cumulus oophorus cell complex
DAVID	Annotation, Visualization and Integrated Discovery
DEGs	Differentially expressed genes
ER	Endoplasmic reticulum
FDR	Fold discovery rate
GnRH	Gonadotrophin releasing hormone
HMG	Human menopausal gonadotrophin
IVF	In vitro fertilization
OSFs	Oocyte-secreted factors
rHCG	Recombinant human chorionic gonadotrophin
RPKM	Read per kilobase of exon per million fragments mapped
RT-qPCR	Quantitative real-time PCR
SMC	Structural Maintenance of Chromosomes