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991.
Cerebroside synthetic activities vary according to age in homogenates of the pons and cortical gray matter from brains of rhesus monkeys. The rate of utilization of uridine diphosphate (UDP) galactose and hydroxy fatty acid (HFA) ceramide for cerebroside synthesis by the pons was very low until 100 days after conception and reached a maximum at about 150 days (15 days before birth). This activity was very low in gray matter.

There were marked effects of the type of ceramide and UDP sugar added, as well as of the origin of the brain homogenates from gray matter or pons on the quantity and type of cerebroside synthetized.  相似文献   

992.
In earlier studies in man it has been demonstrated that streptomycin-dependent shigellae, if given orally in 5 sufficiently large doses, confer a very high type-specific protection against bacillary dysentery.  相似文献   
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An application language for the control and analysis of isolated cardiac muscle experiments is described. It is defined using an extensible language, STOIC (derived from FORTH), which consists of a set of basic operations called words. The basic words are readily combined to form higher level words which perform more complex operations. A suitable set of higher level words forms an application language. The resulting language (1) takes full advantage of system hardware capabilities, (2) is easily used by those with little programming experience, and (3) provides flexibility in a research environment where experimental protocols frequently change.  相似文献   
999.
Six hundred thirty-two percutaneous renal biopsies were performed in 479 patients between 1965 and 1978. Complications occurred with 86 biopsies, an incidence of 8.5 per cent. Most complications (seventy-six of eighty-six) were minor, and either resolved spontaneously or did not require intervention. There were ten major complications, including 6 patients with gross hematuria requiring blood transfusions, 3 with hemorrhage treated with arterial embolization, and 1 with a symptomatic arteriovenous fistula that was treated with partial nephrectomy. Major complications of percutaneous renal biopsy and the modes of therapy are discussed.  相似文献   
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Among the human pathologies produced by venomous animals, bee stings constitute the largest number of accidents in several countries, exceeding the mortality rate caused by other venomous animals such as snakes, spiders or scorpions. The clinical picture after the bee sting may include anaphylaxis or poisoning. The latter is produced by massive attacks and is a serious problem that may put the patient's life at risk. People that are poisoned display hemolysis, rhabdomiolysis and acute renal failure that together with other systemic failures can bring about death. The knowledge of the physiopathological mechanisms involved in the massive attack of bees is crucial for health care professionals as to date we do not have antivenoms with proven clinical efficacy. In this review we include the bee's biological aspects, venom composition and its relation with the occurrence and severity of accidents as well as epidemiological data that can be useful for this type of accidents.  相似文献   
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