哺乳动物中调节昼夜节律的是两个调节神经细胞群，称为视交叉上核中的下丘脑。
The circadian rhythm in mammals is regulated by two clusters of nerve cells called the suprachiasmatic nuclei (SCN) in the anterior hypothalamus.
例如，由于iPS的衍生心脏细胞可以在培养皿中搏动，科学家能以此检测改变心脏节律的药物。
For instance, since the iPS-derived heart cells will beat in a dish, scientists should be able to detect which drugs alter the heart's rhythm.
几乎自然界中所有的物种，从单细胞生物到哺乳动物(包括人类)，都具有一种日常活动周期，称为昼夜节律。
Virtually all species in nature, from single-cell organisms to mammals, including humans, exhibit a daily cycle of activity called circadian rhythm.
控制节律钟的基因在视交叉上核（大脑的某个部位）上表现得最为活跃，但是与其他基因一样，它们在几乎所有细胞中都存在。
The genes that control the body clock are most active in parts of the brain called the suprachiasmatic nuclei.
这些节律包括血压、体温、激素水平、血中免疫细胞的数量、睡眠觉醒周期循环等。
These rhythms include blood pressure, body temperature, hormone level, the number of immune cells in blood, and the sleep wake cycle.
科学家们曾认为昼夜节律的调节是受基因活动支配，但海藻和红细胞中都不含DNA。
Scientists had previously thought the circadian clock was driven by gene activity, but both the algae and the red blood cells kept time without it.
时间生物学是研究机体乃至单细胞活动的生物节律及其时间结构和应用的科学。
Chronobiology is a newly rising science studying the biologic rhythm, time structure and application of organism and monoplast.
在神经，肌肉应激，神经冲动的传递，心动节律的维持，血液凝固，细胞粘着等生理过程中，具有重要的意义。
Calcium is important in the physiologic process of muscle or nervous reaction, nervous impulse transmission, heartbeat rhythm maintenance, blood solidification, cell coherence and so on.
最有趣的是，这些修饰似乎协调行动，并和细胞的昼夜代谢节律相关。
Most interestingly, these modifications seem to act in concert and are associated with the circadian metabolic rhythm of cells.
离体培养的单个心肌细胞的搏动频率特性的研究是生物节律研究的重要内容之一。
The study of beating frequencies of cultured cardiac myocytes is an important subject in study of biological rhythms.
目的研究类风湿关节炎（RA）患者血清白细胞介素（IL）6、皮质醇节律及其临床意义。
Objective To investigate the circadian variation of serum interleukin 6 (IL 6) and cortisol and their clinical value in rheumatoid arthritis (RA) patients.
众所周知，树木次生维管组织的发育具有内在的节律性，与此同时维管组织的细胞内含物也会发生动态变化。
It is well known that the developmental inherent rhythm occurs during the development of secondary vascular tissue. Synchronously, the cell ergastic substance shows dynamic changes.
珍珠囊细胞的分泌活动具有节律性和区段性的特点，这种区段性和节律性的分泌与珍珠多层结晶纤层的形成相适应。
The secretion of the pearl sac cells is rhythmic, which is adaptive for the formation of the multiple crystalline layers of the pearl.
它可测定心肌细胞的搏动频率、幅度和节律，并根据实验要求进行数据处理。
The detection range includes frequency, amplitude and rhythm of the pulse. Data processing can be done according to the needs of experiments.
结论SD大鼠脾脏指数、胸腺指数、肺泡巨噬细胞吞噬功能存在秋低春高的季节节律，这可能是秋季季节性呼吸系统多发病的病理生理学基础之一。
Conclusion There are seasonal rhythms of the functions in the spleen, thymus and alveolar macrophage in SD rats, which are lower in autumn than that in spring.
哺乳动物中的昼夜节律系统由位于下丘脑scn核内的生物钟主钟和位于多数外周细胞中的子钟组成。
The circadian system in mammals is composed of a master pacemaker in the suprachiasmatic nucleus (SCN) of the hypothalamus and slave clocks in most peripheral cell types.
光诱导的视网膜节细胞反应阈值高、潜伏期和持续时间长，与日节律光协同化相符。
Light induced reaction of RGCs is characterized with high threshold and long latency and duration, which are consistent with circadian photoentrainment. Melanops…
培养1 8天后，有6个集落分化为有节律跳动的心肌细胞，这些细胞集落在继续培养1 5天后，仍能有节律收缩。
After 18 d, there were 6 cell clusters differentiated into cardiomyocytes which could beat rhythmically even after another continuous culture of 15 d.
结果：分化细胞中可见节律性收缩的细胞，经超微结构分析和免疫细胞学鉴定为心肌细胞。
RESULTS:Rhythmically contracting cells were observed among differentiated cells, which were proved to be cardiomyocytes with electron microscope and immunocytochemistry.
结果：分化细胞中可见节律性收缩的细胞，经超微结构分析和免疫细胞学鉴定为心肌细胞。
RESULTS:Rhythmically contracting cells were observed among differentiated cells, which were proved to be cardiomyocytes with electron microscope and immunocytochemistry.
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