منابع مشابه
Effect of isoniazid on the protoplasmic viscosity in Mycobacterium tuberculosis.
The effect of isoniazid on the protoplasmic viscosity in the H37Ra strain of Mycobacterium tuberculosis was determined by using electron spin resonance spectroscopy and a small spin label tempone (2,2,6,6-tetramethylpiperidone-N-oxyl radical). Isoniazid (0.5 mug/ml) caused the internal cellular viscosity to increase gradually over the first 15 h of exposure from a rotational correlation time va...
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The small dimensions of ciliary movement make viscosity of the medium a key factor in the hydrodynamic interaction of cilia. Because technical difficulties are encountered in direct observations of ciliary systems, little is known concerning the mechanisms by which the fluid medium actually influences the beat of cilia and metachronism. Gosselin (1958) observed in lateral cilia of mussel gills ...
متن کاملProtoplasmic Theory of Life
an inaugural address delivered by him in the year 1874, as President of the Microscopical Society of Liverpool. In it he endeavours to prove that the modern views concerning the nature of life were anticipated by the late Dr. John Fletcher, of Edinburgh, in 1835, in his work entitled Rudiments of Physiology. We think, however, that his claim to be the discoverer of the Protoplasmic Theory is as...
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HF is a corrosive mineral acid. It has extremely harmful systemic effects through any route of exposure. In dilute solutions the onset of symptoms is latent. It is important for caregivers to remember that HF has distinct clinical signs and a specific antidote, namely calcium gluconate. The industrial use of HF heightens the importance of being prepared for possible exposures. The emergency med...
متن کاملProtoplasmic Potentials in Halicystis
The potential difference across the protoplasm of impaled cells of two American species of Halicystis is compared. The mean value for H. Osterhoutii is 68.4 mv.; that for H. ovalis is 79.7 mv., the sea water being positive to the sap in both. The higher potential of H. ovalis is apparently due to the higher concentration of KCl (0.3 M) in its vacuolar sap. When the KCl content of H. Osterhoutii...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1940
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.17.3.317