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A) Slightly deformed embryos at 2-cell stage, developed from oocytes fertilized in ASW containing 25 µM NiCl2, arrested at an abnormal 8-cell stage; B) Abnormal hatched larvae developed from embryos transferred at 2-cell stage in ASW containing 25 µM NiCl2. Bar is 50 µm in A and 100 µm in B.
