The cover image shows photomicrograph of porcine oocytes showing large amounts of cytoplasmic lipids. Lipid droplets (stained with Sudan red) distribution of porcine in vitro-matured oocytes under different treatment. (A) fresh oocytes; (B) oocytes with toxicity treatment; (C) oocytes vitrified-warmed and (D) oocytes pretreated with taxol and vitrified-warmed. Scale bars = 20 μm. (See G.-B. Zhou et al., 279-285).
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