منابع مشابه
The Rhododendron dauricum L. Flavonoids Exert Vasodilation and Myocardial Preservation
Rhododendron dauricum L. is an ancient Chinese traditional herb. The pharmacological effects of R. dauricum extract have been shown in chronic tracheitis. The aim of this study was to investigate the cardiovascular effects of Rhododendron dauricum L. flavonoids (RF) on rats and its mechanisms. This study was performed in isolated vascular rings and a rat model of myocardial infarction and isola...
متن کاملThe Rhododendron dauricum L. Flavonoids Exert Vasodilation and Myocardial Preservation
Rhododendron dauricum L. is an ancient Chinese traditional herb. The pharmacological effects of R. dauricum extract have been shown in chronic tracheitis. The aim of this study was to investigate the cardiovascular effects of Rhododendron dauricum L. flavonoids (RF) on rats and its mechanisms. This study was performed in isolated vascular rings and a rat model of myocardial infarction and isola...
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We have evaluated the quality of ultrastructural preservation of erythrocyte ghosts achieved under various electron microscopic preparative conditions. Initially, negative staining was used to monitor gross morphology of the ghosts. Of several negative stains used (phosphotungstate, silicotungstate, ammonium molybdate, and uranyl acetate), all but uranyl acetate resulted in fragmentation of mem...
متن کاملAdvances in Ultrarapid Freezing for the Preservation of Cellular Ultrastructure
Most of our current knowledge of cellular ultrastructure is derived from studies of chemically fixed and chemically cryoprotected preparations. In the first part of this review, we document the many artifacts associated with chemical techniques that render them unsuitable for further refinement of our understanding of cellular ultrastructure. The best method currently available for the preserva...
متن کاملLichen preservation in amber: morphology, ultrastructure, chemofossils, and taphonomic alteration
The fossil record of lichens is scarce and many putative fossil lichens do not show an actual physiological relationship between mycobionts and photobionts or a typical habit, and are therefore disputed. Amber has preserved a huge variety of organisms in microscopic fidelity, and so the study of amber fossils is promising for elucidating the fossil history of lichens. However, so far it has not...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1975
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)40296-1