贝卵

There is what Frisch has described as a "razor-thin borderline" where a drop of just 3lb can tip a normal-sized woman into infertility without her realising it.

在她的研究中，贝尔加发现在没有排卵的女性的脑液中有大量的压力激素存在，这些女性经常是处于太多的压力和过度的锻炼状态。

The sequence variation analyses showed that there are 236 variable and 221 parsimony-informative in the aligned 605 nucleotide sites, in addition, the relative frequenencies of four nucleotides were not equal an this fact showed that the base compositions were biased. The results of phylogenetic analyses showed:(1) the phylogenetic relationships of the Cypraeidae taxa was basically in consistent with morphology-based ones;(2)Cypraeovulinae was monophyletic in all trees, whereas Nariinae and Cypraeinae were not;(3)the monophylies of Mauritia, Palmadusta, Erosaria, Monetaria, Staphylaea and Pustularia were strongly supported by molecular data;(4)Meyer's speculation that Chelycypraea came out from Luria were also supported.

结果表明：(1)宝贝科28种动物的分子系统树大部分与形态学分类一致；(2)在系统树上，疹贝与鼻贝亚科的其它分类群的距离相隔较远，提示它们之间有较远的亲缘关系，建议将疹贝属列入宝贝亚科；(3)卵宝贝亚科包括希达贝、脊焦贝、筛目贝、拟枣贝、焦掌贝以及呆足贝等共计15个属，它们在系统树上构成独立的一个大支系，构成单系群；(4)支持Meyer将龟甲贝从禄亚贝总属中分离出来的观点，但龟甲贝和林西那贝之间的系统发生关系及其分类地位还有待于进一步探讨。

Second generation lar-vae and nymphae are fed to healthy donkey,after larvae and nymphae are engorged anddropped,they were also put in incubator to moult.

再将次代幼虫和若虫饲喂在健康驴体上，待饱血脱落后仍置培育箱中蜕化。观察了各发育阶段蜱的血淋巴、肠管、唾液腺以及卵内驽巴贝斯虫的发育形态。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。