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  migration
    STUDIES ON THE DEVELOPMENT AND THE COURSE OF MIGRATION OF STEPHANURUS DENTATUS DIESING
    猪肾虫(Stephanurus dentatus Diesing,1839)的发育和移行的研究
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    STUDIES ON THE MIGRATION AND DEVELOPMENT OF NEGATOR AMERICANUS IN GOLDEN HAMSTERS (MESOCRICETUS AURATUS)
    美洲钩虫在仓鼠(Mesocricetus auratus)体内移行和发育情况的研究
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    In the early period,migrating IPL cells increased(P<0.05),and taurine increased migration at 4 500 m,but inhibited migration at 5 500 m.
    缺氧早期内网状层细胞移行高于对照组(P<0.05),4 500 m时牛磺酸促进细胞的移行,5 500 m早期抑制细胞移行
短句来源
    MIGRATION AND DISTRIBUTION OF PERIODIC WUCHERERIA MALAYI IN THE JIRD, MERIONES UNGUICULATUS
    周期型马来丝虫在长爪沙鼠体内的移行和分布
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    MIGRATION, DISTRIBUTION AND DEVELOPMENT OF LARVAE OF PANDA ASCARID, BAYLISASCARIS SCHROEDERI,IN MICE
    大熊猫西氏贝蛔虫幼虫在小鼠体内的移行、分布及发育
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  “移行”译为未确定词的双语例句
    The mechanism of interdigestive migrating motor complex in man
    消化间期移行性复合运动的发生机制
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    p53 Gene Mutation and Prognosis of Bladder Tumors
    膀胱移行细胞癌预后与p53基因突变关系的研究
短句来源
    Migrating motor complex (MMC) mainly exists in the interdigestive period. Its regulatory mechanisms are not clear.
    消化间期胃肠运动主要表现为移行性复合运动(Migrating motor complex,MMC),其启动和移行的调节机制尚不清楚。
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    Objective: To establish the culture method of normal human renal pelvis epithelial cells, study on the adhesion of uropathogenic Escherichia coli (UPEC) and research the toxicity of the UPEC virulence factors to host cells.
    目的:建立正常人肾盂移行上皮原代细胞的培养方法,进行致肾盂肾炎大肠杆菌(pyelonephritic E.coli or uropathogenic E.coli,UPEC)粘附特性的研究,并探讨UPEC132毒力因子对宿主细胞的毒性作用。
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    The 50% first stenosis is located in the ureteropelvic junction and another 50% is located in the upper ureter.
    输尿管第一狭窄50%位于肾盂输尿管移行区,50%位于近段输尿管。
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  migration
PHENYLPYRUVIC ACID DERIVATIVES AS ENZYME INHIBITORS: THERAPEUTIC POTENTIAL ON MACROPHAGE MIGRATION INHIBITORY FACTOR
      
Moreover, we suppose that migration is not allowed.
      
Relative standard deviations of the relative migration times of DNA segments were >amp;lt;3.6%.
      
A highly cross-linked structure was formed in both the cores and the shells by using a cross-linking agent, which could prevent the migration of hydrophobic PS shells to the inside of particles.
      
By compensating the range migration in wideband airborne mechanic scanning radar, the proposed DBS imaging algorithm can efficiently improve the resolution of a DBS image.
      
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The principal facts presented in this paper may be summarized below.1. Experiments are designed to determine whether the infective larvae can penetrate the unbroken skin of both piglets aud full grown pigs, with the result that they are capable of penetrating the skin of the former but fail to do so in the latter. It is evident that the intact skin of piglet is considerably more tender than that of the full grown pigs, and hence less resistant to the attacks by the larvae.2. When infection occurs orally, the...

The principal facts presented in this paper may be summarized below.1. Experiments are designed to determine whether the infective larvae can penetrate the unbroken skin of both piglets aud full grown pigs, with the result that they are capable of penetrating the skin of the former but fail to do so in the latter. It is evident that the intact skin of piglet is considerably more tender than that of the full grown pigs, and hence less resistant to the attacks by the larvae.2. When infection occurs orally, the larvae penetrate into the wall of stomach or intestine, reaching to the mesentery, where the third moulting takes place. The larvae are arrested there at least for a time by the nodule-forming reaction of the host tissue. Then they migrate to the liver through the parenchyma tissue. If infection occurs by penetrating the skin, they pass into the muscular tissue and migrate to the lung and liver. Some larvae may become encapsulated in the lung. If the infective larvae are injected directly into the blood stream, the larvae would reach to the lungs immediately, but they can not develop at this location. On the other hand, examinations of the lymphatic vessels, thoracic duct, vena cava and veins of the experimental animals fail to reveal any larvae. It may be concluded, therefore, that the migration of the early-stage larvae must be accomphlished through the parenchyma tissus to the various organs, and rarely through the blood vessel or lymphatic duct.3. When placed on the intact skin of guinea pigs, Stephanurus larvae penetrate into the skin and take the third moult in 3-5 days; they reach the liver in about 20 days. But the worms develop and migrate rather slowly in its swine host. In pigs about one month old, the larvae reach the liver in 36 days after infection. When injected subcutanously, they arrive the liver in 32 days.Experimental infection through the oral route shows that the larvae reach the liver at about the 16th day in guinea pigs, and 25th day in pigs. The difference in time may be explained by the difference in body size of the two host animals.4. Experimental infection of white rats indicates that some larvae are capable of penetrating into the skin and take the third moult, but can not develop any further and die in six days. Experimental infections with Macaca mulatto, and Rhinopithecus roxellanae both orally and by subcutanus injection of infective larvae are similar in results to those experiments in using the white rats with stunted growth. Similar experiments carried on guinea pigs indicate that the larvae migrate to the lungs, liver and other organs, and grow up to the third and fourth stage, but do not reach the surrounding fat tissue and kidney to become the adult worm in about five months.All the previous investigators who reported kidney worms from the cattle (Bos tanurus) either from experimental or natural infections have recorded only sexually immature specimens. In our present study, mature worms consisting of 4 males and 5 females are secured from the perirenal tissue of a calf in a slaughter house in Foochow. Thus the cattle is recorded as a new host of Stephanurus dentatus.

1.猪肾虫从口吞食和皮肤接触均可感染,小猪皮肤接触和吞食感染相同,大猪皮肤较厚,幼虫不易侵入,其获得感染是以口吞食为主。 2.小猪从皮肤接触感染,经3—5天在皮下结缔组织行第三次蜕皮,38天移行至肝,150天虫体穿出肝表面向腹腔柔组织移行,157—185天在输尿管壁上形成包囊发育为成虫。从口吞食感染,经3—4天在胃壁大网膜和肠系膜等处停留,形成结节病变行第三次蜕皮,25天移行至肝,30天雌雄已明显分化,40日前后行弟四次蜕皮,118天离开肝向腹腔移行,156天后在输尿管壁形成包囊发育为成虫。皮下注射感染与皮肤接触感染相同。血管注射感染,幼虫到肺后多数不发育而死亡。 3.猪肾虫侵入宿主后,有嗜组织的习性,在组织中停留和移行,移行的方向不定,可向体前部移行,亦可向体后部移行。在淋巴结中常检得虫体,门静脉中虽有虫体栓塞,但未见在血管和淋巴管中移行。 4.猪肾虫在宿主体中发育的时间,除因虫体停留在组织结节中长短不定外,移行的速度与宿主大小有关系;宿主小,移行较速,成熟较快;宿主体大,##...

1.猪肾虫从口吞食和皮肤接触均可感染,小猪皮肤接触和吞食感染相同,大猪皮肤较厚,幼虫不易侵入,其获得感染是以口吞食为主。 2.小猪从皮肤接触感染,经3—5天在皮下结缔组织行第三次蜕皮,38天移行至肝,150天虫体穿出肝表面向腹腔柔组织移行,157—185天在输尿管壁上形成包囊发育为成虫。从口吞食感染,经3—4天在胃壁大网膜和肠系膜等处停留,形成结节病变行第三次蜕皮,25天移行至肝,30天雌雄已明显分化,40日前后行弟四次蜕皮,118天离开肝向腹腔移行,156天后在输尿管壁形成包囊发育为成虫。皮下注射感染与皮肤接触感染相同。血管注射感染,幼虫到肺后多数不发育而死亡。 3.猪肾虫侵入宿主后,有嗜组织的习性,在组织中停留和移行,移行的方向不定,可向体前部移行,亦可向体后部移行。在淋巴结中常检得虫体,门静脉中虽有虫体栓塞,但未见在血管和淋巴管中移行。 4.猪肾虫在宿主体中发育的时间,除因虫体停留在组织结节中长短不定外,移行的速度与宿主大小有关系;宿主小,移行较速,成熟较快;宿主体大,移行时间较长,成熟较慢;因此致使过去学者报告猪肾虫成熟时间有4个月,5个月,6个月和9个月等不同结论。 5.从豚鼠皮肤接触感染,经3—5天幼虫皮下结缔组织,肠系膜和大网膜等柔组织形成结节病变,行第三次蜕皮,经5—8天移行

The principal facts on the life history of Metastrongylus apri presented in this paper may be summarized below.1. The first-stage larvae cultured in physiological saline would live up to 6 mouths, while the infective larvae separated from the intermediate host earthworm tissues and suspended in tap water were able to survive for about 4 months.2. Under the room temperature of 24-30℃, the rate of infection in the intermediate host was 100%. The hatched larvae grew to the infective stage in about 8 days, but at...

The principal facts on the life history of Metastrongylus apri presented in this paper may be summarized below.1. The first-stage larvae cultured in physiological saline would live up to 6 mouths, while the infective larvae separated from the intermediate host earthworm tissues and suspended in tap water were able to survive for about 4 months.2. Under the room temperature of 24-30℃, the rate of infection in the intermediate host was 100%. The hatched larvae grew to the infective stage in about 8 days, but at a lower temperature, the development was retarded. Between 14℃ to 21℃ they became infective in about one month.3. In field surveys of the earthworms in several pastures of Minhow and Putien districts, 14 of them were found infected. Phcretima, hupeiensis serves as the most important intermediate host of M. apri.The parasitised organs of the earthworm are different in different species. In the Ph.aspergillum almost all larvae were found in he stomach wall. In Ph. hupei-ensis they were also found in the anterior part of the intestinal wall, and in Allolobo-phora caliginosa trapezoides most larvae were found in the wall of the oesophagus.4. When infective larvae of M. apri were fed to pigs, they penetrated into the wall of caecum and the large intestine after 24 hours. Three days following infection after the third and fourth moulting the larvae penetrated the caecal or large intestinal wall and arrived at the peritoneal cavity where they migrated to the mesentery and mesenteric lymph nodes. The migration to the lung by way of lymphatic vessels took place in about 4 days for the female and 6 days for the male. From the lungs they finally migrated to the bronchi, where they developed into the adult stage in about 23 days after infection.5. Two small swines were injected intravenously of infective larvae of M. apri. The result of the experiment was similar to that obtained by oral infection, numerous larvae being found in the lungs about 4 days for the female and 6 days for the male.6. Infection experiments were made on abnormal hosts such as dogs, white rats, sheep, monkey (Macaca mulatta) and guinea pigs. It was found that some larvae were capable of undergoing four moults and migrated to the lungs, but none of them could develop to maturity.

1.猪后圆线虫在蚯蚓体中的发育时间长短,随温度高低不同。自感染发育成为感染期幼虫,在月平均室温10.6和13.8下不能发育;在14—21℃(平均室温17.5℃)下需1个月;在24—30℃仅需8天。 2.幼虫在蚯蚓体中的第一期幼虫需时较长,第二期幼虫时间甚短,经常检得第一次蜕皮的外鞘尚未脱去,又进入第二次蜕皮,形成感染期幼虫。 3.通过闽侯、晋江、闽北三专区19个养猪场的调查,有14种蚯蚓充为猪后圆线虫的中间宿主,其主要的是湖北环毛蚓,这种蚯蚓生活在猪场中,感染率和感染度均甚高,为传播猪后圆线虫的主要种类。 4.幼虫在蚯蚓体中寄生的部位,随各种类不同,参环毛蚓主要寄生在胃壁中,湖北环毛蚓则寄生在胃壁和肠管前段肠壁中,暗灰异唇蚓主要在食道壁,少数在胃壁中。 5.第一期幼虫在外界潮湿的环境中可生存半年,感染期幼虫在水中可生存2—4个月。在环毛蚓体中可生存一年半以上。 6.幼虫侵入猪体后,于1—5天内在盲肠壁,大肠前段肠壁和肠淋巴结中行第三、四次蜕皮,然后穿过肠壁经淋巴系统移行到肺。雌虫发育较快,于第4天便移行到肺、雄虫经6天才在肺中检得。经23天发育成熟排出虫卵。从耳静脉注射入幼虫发育与口吞...

1.猪后圆线虫在蚯蚓体中的发育时间长短,随温度高低不同。自感染发育成为感染期幼虫,在月平均室温10.6和13.8下不能发育;在14—21℃(平均室温17.5℃)下需1个月;在24—30℃仅需8天。 2.幼虫在蚯蚓体中的第一期幼虫需时较长,第二期幼虫时间甚短,经常检得第一次蜕皮的外鞘尚未脱去,又进入第二次蜕皮,形成感染期幼虫。 3.通过闽侯、晋江、闽北三专区19个养猪场的调查,有14种蚯蚓充为猪后圆线虫的中间宿主,其主要的是湖北环毛蚓,这种蚯蚓生活在猪场中,感染率和感染度均甚高,为传播猪后圆线虫的主要种类。 4.幼虫在蚯蚓体中寄生的部位,随各种类不同,参环毛蚓主要寄生在胃壁中,湖北环毛蚓则寄生在胃壁和肠管前段肠壁中,暗灰异唇蚓主要在食道壁,少数在胃壁中。 5.第一期幼虫在外界潮湿的环境中可生存半年,感染期幼虫在水中可生存2—4个月。在环毛蚓体中可生存一年半以上。 6.幼虫侵入猪体后,于1—5天内在盲肠壁,大肠前段肠壁和肠淋巴结中行第三、四次蜕皮,然后穿过肠壁经淋巴系统移行到肺。雌虫发育较快,于第4天便移行到肺、雄虫经6天才在肺中检得。经23天发育成熟排出虫卵。从耳静脉注射入幼虫发育与口吞食感染相同。 7.猪后圆线虫在小白鼠、猕猴、山羊、幼狗和豚鼠体中,仅能短时间的发育生存,不能发育为成熟成

Although several studies on the morphology of post-cercarial development of Schi-stosoma japonicum have already been made, very few data are available regarding its physiology and metabolic characterestics during its growth in the final host. Such knowledge will greatly contribute to a better understanding of both chemoprophylaxis and immunology of schistosomiasis. This paper deals with the localization and dynamic changes of histochmistry in schistosomula during the course of their development.

本文报告了日本血吸虫在小鼠体内发育过程中虫体内组织化学的定位及其所发生的改变。组织化学的研完结果表明日本血吸虫在小鼠体内生长和发育过程中童虫体内物质呈现动态的改变,主要表现为: 1.在皮肤中的早期童虫仅在体后端实质组织内含有丰富的硷性磷酸酶活力,随着虫体的移行和生长,实质组织的阳性反应减弱或消失,而在体壁出现了极强的酶活力 2.刚侵入皮肤的童虫体内贮有大量糖原,随着虫体的移行和发育,糖原显著减少,至将成熟时又再贮存糖原,且于成熟后一直保持着丰富的含量。 3.未在发育阶段的童虫体内查见脂类物质,仅在性将成熟及充分成熟的雄虫实质组织和雌虫卵黄细胞中才沉积相当量的脂类。 4.在发育过程中,两性生殖腺无明显的多糖物质,但一直含有丰富的核酸和蛋白质,至雌虫将成熟时又在卵黄细胞中出现了制造卵壳的前身物,蛋白质、酚及酚酶。 最后,对血吸虫的发育生理学进行了讨论。

 
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