Fig. 1.

Sampling strategy for the measurement of follicular fluid (FF) high density lipoprotein (HDL) analytes measured in ipsilateral follicles, collected from in vitro fertilization patients. Group I analytes included HDL cholesterol, phospholipids, triglycerides, arylesterase, and paraoxonase activities, and apolipoproteins (ApoA-1 and ApoA-2), for which two determinations were made per sampled follicle. Group II analytes included free cholesterol, cholesteryl palmitate, cholesteryl oleate, cholesteryl linoleate, cholesteryl arachidonate, retinol, β-carotene, β-cryptoxanthin, α-tocopherol, γ-tocopherol, lutein/zeaxanthin, and lycopene, for which one determination was made per sampled follicle