这种来自墨西哥和美国西南部的、全为雌性的蜥蜴物种（脊索动物门臼齿蜥科Aspidoscelis属）能够在无需雄性授精帮助的情况下繁殖良种后代。

This all-lady lizard species (of theAspidoscelis genus) from Mexico and the U.S. Southwest manage to produce well-bred offspring without the aid of male fertilization.

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研究设计：我们研究了大鼠脊索的电子和光学显微镜下改变、嗜中性粒细胞浸润和脂过氧化作用情况，同时还研究了其早期的神经系统检查情况。

Study Design. Electron and light microscopic changes, neutrophil infiltration, and lipid peroxidation in the spinal cord and early neurologic examination were studied in rats.

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结合微分几何的曲线论和分布荷载作用下索的受力模型，研究了索膜结构中边索、脊索和谷索的受力分析和形状分析。

Combined the curve theory of differential geometry and the cable model applied distributed load, form analysis and tension analysis of boundary cable, ridge cable and valley cable were performed.

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