阳性选择决定了成熟T细胞的MHC限制性，阴性选择使机体获得自身免疫耐受。
The MHC restriction of t cell is determined in positive selection. The tolerance of t cells to autoantigen is acquired during negative selection.
双侧卵巢成熟囊性畸胎瘤，是来源于生殖细胞的肿瘤。
Here are bilateral mature cystic teratomas of the ovaries. These are a form of ovarian germ cell tumor.
结果显示霍乱毒素B能增强树突状细胞的活化与成熟，对其免疫学功能起正性调节作用。
Cholera toxin B can enhance the activation of dendritic cells mature, its immune function from the positive regulatory role.
本文分析了从大麦成熟胚培养快速建立胚性悬浮细胞系的两个关键步骤。
The present paper analysed two key procedures for rapid establishment of embryogenic cell suspension cultures derived from barley mature embryo.
非成熟型和成熟型肥大细胞面积有显著性差异（P< 0 0 1） ，其胞浆内颗粒的大小、数量及分布区域均不同。
There was significant difference between the sizes of mature and immature mast cells (P<0.01) and also the sizes, amount and distribution of the plasma granules within these two mast cells.
成熟型畸胎瘤18例，未成熟型畸胎瘤6例，恶性小圆细胞性肿瘤1例。
Of the 25 patients there were 18 mature teratomas, 6 immature teratomas, and 1 malignant small round cell tumor.
观察发现雄性性腺发育过程中性细胞呈现区域性同步化分布特征 ；雌性性腺的不同部位发育程度也有一定差异 ，造成性腺分批成熟排放。
The male germ cells at similar differentiated stage were arranged in same area of the follicle and the development of different parts of the gonad were unequal.
草鱼一年多次产卵的生物学基础主要是：(1)成熟草鱼卵母细胞发育的不完全同步性。
The biological basis consists of: (1) the development of oocytes in the ovary of the brood fish is not completely synchronous.
目的探讨非特异性角膜炎症反应中朗格罕氏细胞（LC）形态的成熟与角膜炎症细胞浸润的相关性。
Objective To analyze the relationship between morphologic maturation of Langerhans cell(LC) and inflammatory corpuscles in nonspecific keratitis.
卵母细胞成熟潜能的获得显然具有温度依赖性。
Therefore, the acquisition of maturation competence in oocyte is dependent on a suitable temperature.
目的：探讨玻璃化冷冻未成熟卵母细胞的有效性。
Objective: to investigate the efficiency of vitrification of immature oocytes to expand the field of gamete cryopreservation.
目的：探讨幼龄鼠未成熟脑组织对惊厥性脑损伤中细胞凋亡与坏死病理过程具有主动保护性抑制机制的分子生物学机理。
Objective: to explore the molecular biological base of internal protective response in premature brain which reduces the process of apoptosis and necrosis of neurons.
采用体外诱导卵母细胞成熟技术，比较研究了雌核发育银鲫和两性融合发育彩鲫卵母细胞成熟过程中周期蛋白合成和MPF活性变化情况。
The changes in cyclin synthesis and MPF activity during oocyte maturation in vitro in gynogenetic silver crucian carp and amphimictic colored crucian carp were compared.
结果研究对象中，20例为未成熟畸胎瘤，11例为卵黄囊瘤，8例为无性细胞瘤，6例为混合性生殖细胞肿瘤。
Result To study patients, 20 immature teratoma (IT), 11 endodermal sinus tumor, 8 dysgerminoma, 6 mixed germ cell tumors.
比较两种方法是否存在差异。以该周期获得成熟卵母细胞数回顾性判断卵巢储备功能，加以校对。
Then, ovarian reserve is valued according to the maturation oocytes to retrieve in this cycle with excluding any other factors.
比较两种方法是否存在差异。以该周期获得成熟卵母细胞数回顾性判断卵巢储备功能，加以校对。
Then, ovarian reserve is valued according to the maturation oocytes to retrieve in this cycle with excluding any other factors.
应用推荐