查询词典 stem from

In a number of cycles the Fed held back from tightening because of concern over high unemployment; and when it did tighten, it stopped too soon to stem an inflationary spiral because of political pressure both from Congress and the Johnson and Nixon administrations.

在多个经济周期中，由于担心失业率高企，美联储迟迟没有收紧货币政策。等到其收紧货币政策时，迫于国会和政府的政治压力，美联储又过早结束了这种政策，以致未能阻止通胀的螺旋式攀升。

He also had to be able to talk like a sailor."My knowledge of ships and sailor's talk came much to my assistance, for I knew a ship from stem to stern, and from keelson to cross-trees, and could talk sailor like an 'old salt.'"

另外，他也必须让自己听起来就像是个水手「我对船及水手行话的了解帮了我很大的忙，因为我对船知之甚详，从它的内龙骨到它的桅顶横桁，我无一不知。

Possible cell sources for replacement range from autologous grafts of dopamine secreting cells to allografts of fetal ventral mesencephalon and neural precursor cells derived from fetal tissue or embryonic stem cells.

从多巴胺分泌细胞的自体移植物到胎儿组织的同种异体移植物或胚胎干细胞都是可替代的可能细胞来源。

Gunckel, who on the evening card ginkgo auxin from the stem end is not at Health Organization, or young leaves, and some Monocotyledon similar, from a rib-like sub-section of the Health Organization.

Gunckel等人的研究证晚银杏生长素不是来自茎端分生组织或幼叶，而与某些单子叶植物相似，来自具肋状分生组织的节间。

METHODS: Liver biopsy autopsy specimens were examined from nine female patients who had undergone allogeneic bone marrow (n = 6) or peripheral stem cell (n = 3) transplantation from a male donor.

检测9名女性患者的肝脏活检或尸检标本，她们中6名接受骨髓移植，3名接受外周血干细胞移植，供者为一名男性。

Now more than ever, issues such as climate change, obesity, stem cell research, green technology, and evolution are migrating from scientific journals to the nonscience community, from school halls to the halls of Congress.

现在有比以往更多的问题，如气候变化，肥胖，干细胞研究，环保技术演化的迁移从科技期刊到非科学社会，从学校礼堂到国会大厅。

From the bone marrow of pluripotent stem cells (embryonic period from the yolk sac and liver).

来源于骨髓的多能干细胞（胚胎期则来源于卵黄囊和肝）。

ERK positive cell mainly distributed at nucleus of solitary tract, ambigous nucleus, and positive fibers and cells mainly distributed at medullary visceral zone, nucleus of solitary tract and ambigus nucleus. These positive cells formed an isolated zone from nucleus of solitary tract via medullary visceral zone to SP5, which could be seen using immunohistochemical stain. Positive cells and fibers also distributed at the projection from pneumogastric nerve to the stem.

免疫组织学染色可见，阳性细胞主要分布于延髓内脏带的孤束核和疑核、阳性纤维伴随阳性细胞分布于延髓内脏带的孤束核区和疑核、呈沿孤束核经延髓内脏带至三叉神经脊束核的弧行带；在迷走神经向脑干投射部位也可见阳性胞体和纤维的分布。

Results:(1)NSCs form typical neurospheres under adequate concentration in vitro, which are immunoreactive to Vimentin. Typically and terminally differentiated mature neural cells could not be found without the stimulus of mitogen or only under NSCs self-regulation and self-induction;(2)NSCs derived from hippocampus maintain the character of stem cells much longer with better biological behavior; NSCs passed to the 2-3 passage are the best to graft since they have not differentiated;(3)NSCs cultured in vitro could self-regulate and differentiate into neurospheres and progenitors positively immunoreactive to specific antibodies representing neurons, astrocytes, oligodendrocytes and Schwann cells;(4)There are widespread synaptic contacts between various kinds of descendent clones and cells;(5)Neurospheres could be formed without the stimulus of mitogen when NSCs and OECs are cocultured. Many neurospheres and cells immunoreactive to Vimentin, GFAP, MAP2, 02, p75NGFR, GFAP, S-100, Synaptosis, Vimentin, Tau (Tau is only positive in cocultureof HNSCs+HOECs) could be found;(6)The supernatant fluid triturated from adult rat spinal cord stimulates NSCs to differentiate into neurons, but do not terminally differentiate;(7)Fibroblasts and O4 oligodendrocytes are not supported to grow under this culture medium.Part II: Isolation, culture and identification of rat and human olfactory ensheathing cellsOlfactory ensheathing cells/glials are the most powerful cells to enable the regeneration of axons in the central nervous system.

结果表明：①在适宜的浓度体外培养条件下，NSCs能形成典型的神经干细胞克隆球，Vimentin免疫荧光染色阳性，单靠丝裂原刺激或NSCs自我调节和分化诱导，不会产生典型的终末分化的成熟神经细胞；②海马源性的NSCs维持干细胞特性的时间更长，生物学特性更优；③传至第2～3代的NSCs尚未分化时移植最佳；④体外培养的NSCs能自我调控分化为神经元、星形胶质细胞、O2少突胶质细胞、雪旺氏细胞染色阳性克隆球和前体细胞；⑤各种子代克隆球和细胞存在广泛的突触联系；⑥NSCs与OECs联合培养时，不需丝裂原刺激即能形成克隆球，获得大量Vimentin、GFAP、MAP2、O2、p75NGFR、GFAP、S-100、Synaptosis、Vimentin、Tau(Tau只有人HNSCs+HOECs联合培养时出现阳染)染色阳性的克隆球和细胞；⑦脊髓研磨后的上清液刺激神经干细胞向神经元方向分化，但并不出现终末分化；⑧本研究培养条件不利于成纤维细胞、O4生长。

The biological characteristics of the pathogen of the tomato stem rot was studied. The results showed that the mycelia could grow better on PDA, PSA, 2%water agar, Richard,tomato juice,oatmeal and tomato oatmeal culture media, but worse on the 2%water agar culture medium. The temperature for mycelial growth ranged from 2 ℃ to 32 ℃, and 20 ℃ was the optimum. The mycelia could grow from pH3 to pH10, but pH5-7 was better.

对番茄茎基腐病病原菌生物学特性研究结果表明：病菌菌丝在供试PDA、PSA、2%水琼脂、Richard、番茄煎汁、燕麦片和番茄燕麦等7种培养基中均能良好生长，而在2%水琼脂培养基上生长较为缓慢；菌丝在2~32 ℃范围内均能生长，最适20 ℃，致死温度为50 ℃，10 min；菌丝生长的pH范围为3~10，最适为5~7；光照对菌丝生长影响较小。

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％。