开始发育

Puberty when the hypothalamus pituitary development formed to stimulate the beginning of testicular gonadal hormone secretion, so that in the vas deferens spermatogonium split into spermatocytes, and then split into sperm cells, sperm cells eventually split into sperm.

青春期时，丘脑下部垂体的发育形成了，刺激睾丸性腺开始分泌性激素，使输精管里的精原细胞分裂成精母细胞，再分裂成精子细胞，最终精子细胞分裂成精子。

There formed segregating cavities between spermatocyte cell-wall and spermogonium cell-wall and osmiophillic layers outside spermatocyte cytoplasmalemma, which indicated that the spermatocytes had begun to gradually break away from the male gametophytes and embark on independent development.

精母细胞与精子器的璧细胞之间形成了分离腔，在精母细胞质膜外形成了嗜锇层，这些结构的形成说明精母细胞已经开始与雄配子体逐渐分离，进入独立发育的阶段。

The second peak occurs at 7 days after collecting, meanwhile the fruit star decomposing.

乙烯含量第一次高峰出现在开花坐果后27天，促进果实发育，采后7天出现第二次高峰，此时果实开始腐烂。

From April to September, several clusters of bamboos, 3 ~ 4 m long, 1 ~ 2 m wide, were set on the sea bed at a depth of 16 to 20 m to attract their spawning, and the egg-strings were then transported to the laboratory. When the development of the embryo reached stage 24, iris of eyes being prominent as a colour circle and statolith being formed, they were transferred into different rearing conditions, i.e., 20, 25, 30, 35 o/oo and 15, 20, 25, 30 oC. The durations from stage 24 to hatching were different among all different rearing conditions. The statoliths were extracted and mounted in Crystal Bond thermoplastic cement for reading their growth rings.

每年的四月到九月为东北角软丝主要的产卵季节，竹丛被设置在沙质海床上吸引成熟的个体前来产卵，将采集到的卵串带回实验室中培养，当胚胎发育至第二十四期的时候(胚胎的虹膜及平衡石开始生成)，这些胚胎分别被转换至不同的温度及盐度条件之下培养，温度被控制在15， 20， 25， 30 oC 四种条件下，盐度则分为20， 25， 30， 35 o/oo 四种条件，共组成十六种不同的培养条件，从平衡石生成至幼体孵出所需要的时间随著培养条件的不同而有所差异，孵化所需要的时间会随著培养的温度而有很大的变化，低温的条件会将所需的时间增长许多，在正常的条件下(25oC，35o/oo)，从平衡石出限制肤出约需要9~16天。

We found that during sexual maturation, a low level of SPARC expression occurred in ovary matrix, and moderate in theca cells, but there was no signal in granulosa cells and oocytes.

在eCG诱导的卵泡发育过程中，注eCG 6小时之后，SPARC在卵泡膜细胞和卵巢基质中的表达开始上调，之后显著增强，48小时在膜细胞和卵巢基质中都强表达。

Slack's research group initially discovered the let-7 miRNA in C. elegans, a tiny worm used as a model system for studying how organisms develop, grow and age.

Slack的研究小组最开始在线虫，一种小蠕虫，用来研究生物发育，生长和老化的模式生物，体内发现了let-7 miRNA。

The somatic nucleus will be reprogrammed after NT and will restore a totipotent state in order to und...

核移植后会出现基因程序重编，重组胚重新获得多能性，开始新的胚胎发育。

Methods A retrospective study was performed in a group of unoperated bilateral complete cleft lip and palate patients who received simultaneous primary palate repair and alveolar bone grafting.

按照唇腭裂序列治疗的现代概念，腭裂修复应在语音发育开始前完成，一般在出生后 9～ 12个月进行，而齿槽嵴裂植骨修复术的最佳时间应在尖牙未萌出前，牙根形成 1/ 2～ 2 / 3，患者年龄为 9～ 11岁[1] 。

Yolk-sac larva A fish larvae which has already hatched from the egg but has not started feeding yet and still absorbs the yolk in the ventrally attached sac.

卵黄期幼生鱼幼体的发育阶段特徵，描述在消化道区域腹部有一个卵黄囊。鱼幼体已经从卵孵化，但是仍然没有开始觅食而继续吸收在腹附著的卵黄囊。

Almost from its inception it follows a developmental pattern sharply divergent from that of the zygote.

它几乎一开始就遵循与合子显然不同的发育模式。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。