Table I.

Information regarding human follicular cells and embryonic developmental stage used in microarrays experiments.

	Small follicle	Medium follicle	Large follicle	Medium follicle
	Poor or blocked embryonic development			Transferable (transferred or cryopreserved) embryos
Follicular fluid	0.5–1.5 ml	2–3 ml	>3 ml	2–3 ml
Equivalent diameter based on fluid volume	9.8–14.2 mm	15.6–17.9 mm	>18 mm	15.6–17.9 mm
Embryonic developmental stages associated with enclosed oocytes	Zygote to up to 10 cells	Zygote to up to 10 cells	Zygote to up to 10 cells	Blastocyst stage at Day 5 or 6