囊孢子的

Nucellar cells degenerated in advance under low temperature, which resulted in thickened embryo sac wall surrounding the megasporocyte.

低温处理的蝴蝶兰，胚囊发育过程中珠心细胞提前退化，在大孢子母细胞外围形成较厚的胚囊壁。

Abnormal phenomena in different periods of embryo sac development, including degeneration of megaspore, embryo sac abnormality during the periods of two to eight nucleate etc., were found in the plants with low seed setting rate.

对一些结实率偏低材料的研究，发现在胚囊发育过程的不同时期存在一些异常现象，包括功能大孢子退化，二至八核胚囊发育异常等。

Results One 446 bp PCR product was observed by agarose gel electrophoresis for all three kinds of templates. The PCR sensitivity by Chelex-100 extracted DNA reached for detection of a specimen containing only 1/2 oocyst.

结果3种方法制备的微小隐孢子虫卵囊模板用于PCR检测均获得1条446 bp条带，Chelex-100提取的DNA用于PCR检测的敏感性至少达0.5个卵囊。

The upward mice were inoculated with 2.0×105 oocysts, which were kept at the same time and with the same methods, in 4 ℃, 2.5 % potassium dichromate. 2 days after infection, mice feces were collected and oocyst were isolated and purified used saturated sucrose flotation.

以上各组每只小鼠感染保存时间和方法均相同的微小隐孢子虫卵囊的剂量均为2.0×105个，感染后第3天开始收集鼠粪，收集的鼠粪均用饱和蔗糖漂浮法分离纯化卵囊。

All chickens were orally challenged with homologous sporulated oocysts at 26 days of age and killed at eight days post challenge. Weight gains, anticoccidial index and oocyst output were determined and compared with those of the control animals.

以可溶性的GST-gam56-2融合蛋白为免疫原，设立高、中、低(1.0 mg、0.5 mg、0.25 mg) 3个剂量，单独或使用弗氏完全佐剂，于5 d、12 d和19 d对雏鸡进行3次免疫， 26 d用5×104个E.maxima孢子化卵囊进行攻虫，8 d后迫杀，对各组的存活率、相对增重率、卵囊减少率、ACI等指标进行统计分析。

Nevertheless, the mosquitoes provide a physiological milieu, for sporogony of the malaria parasites.

已知蚊虫天然免疫系统在疟原虫穿壁、卵囊发育和子孢子移行进腺等过程中产生包括局部和全身性多位点的免疫反应，同时蚊虫为疟原虫孢子生殖阶段提供必不可少的生理环境。

Past study re-sults had indicated that MMC in the apomictic type could at most develop to te-trad stage.We observed that the sexual embryo sac of"Pingyi Tiancha"coulddevelop into 4-nuclei embry sac.

前人只观察到无融合生殖类型的大孢子母细胞至多能发育到四分体时期，而我们观察到平邑甜茶的有性胚囊能发育到四核胚囊。

Using single oocyst infected techniques, three strains of Eimeria tenella, PT0705, FQ0709 and LJ0711, were obtained from classically symptomic coccidian chicken in Putian, Fuqing and Lianjiang Couties, Fujian Province. In order to compare their toxicity against chicken, healthy chicken of 14th-day and 21th-day were artificially infected with 1×104, 5×104 and 10×104 coccidian oocysts of PT0705, FQ0709 and LJ0711, respectively. The results showed that the strain PT0705 was the most toxic to tested chicken based on the clinical symptom, survival rate, weight increment and lesion grade investigations.

采用单卵囊分离技术，从福建省莆田市、福清市和连江县等地鸡场采集的病鸡盲肠内容物样品中，分离获得3株(PT0705、FQ0709、LJ0711)柔嫩艾美耳球虫纯种；为比较这三种虫株对雏鸡的毒性，分别用1×104、5×104和10×104个孢子化卵囊的剂量感染14日龄和21日龄健康无球虫感染雏鸡，通过临床表现、死亡率、增重情况、病变计分等指标比较，发现PT0705虫株呈现最强毒性。

A unisexual reproductive structure of gymnospermous plants such as conifers and cycads, typically consisting of a central axis around which there are scaly, overlapping, spirally arranged sporophylls that develop pollen-bearing sacs or naked ovules or seeds.

球果单性裸子植物的生殖器，例如针叶树和铁树目植物，一般由覆满鳞片和褶皱的中心轴构成，长螺旋状排列的孢子叶，孢子叶最终成为花粉囊或裸露的孢子或种子

A unisexual reproductive structure of gymnospermous plants such as conifers and cycads, typically consisting of a central axis around which there are scaly, overlapping, spirally arranged sporophylls that develop pollen-bearing sacs or naked ''.

球果单性裸子植物的生殖器，例如针叶树和铁树目植物，一般由覆满鳞片和褶皱的中心轴构成，长螺旋状排列的孢子叶，孢子叶最终成为花粉囊或裸露的孢子或种子

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。