极核细胞能自主融合成为一个次生大细胞，但未观察到融合后的细胞进一步分化。
Polar nuclei could autofused to a big secondary cell, but further differentiation of the cell was not observed.
CB能抑制卵母细胞激活后第二极体排出，从而提高原核的形成率。
CB can increase the two pronuclei formation rate of oocytes by inhibiting the extrusion of second polar body.
目的：观察川芎嗪对心肌细胞在缺钙-复钙损伤时发生的早期后除极及触发性心律失常的防治作用。
AIM: To observe the preventive and therapeutic effects of tetramethylpyrazine (TMP) on early afterdepolarizations (EAD) and triggered arrhythmias induced by calcium deficiency-recalcification injury.
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