منابع مشابه
Heterogeneity of the plasma iron pool: explanation of the Fletcher-Huehns phenomenon.
Observations on iron uptake by reticulocytes led Fletcher and Huehns to suggest differences in the behavior of the two iron-binding sites of the transferrin molecule. To clarify the continued controversy relating to this hypothesis, the original studies employing control plasma labeled with radioiron and the same plasma preincubated with reticulocytes were reexamined. Regardless of whether huma...
متن کاملInterpreting the Beaker phenomenon in Mediterranean France: an Iron Age analogy
The author offers a new descriptive explanation of the Beaker phenomenon, by focusing on Mediterranean France and making reference to the Greek influx in the same area 2000 years later. In the Iron Age, the influence began with an exploratory phase, and then went on to create new settlements and colonise new areas away from the coast. The Beaker analogy is striking, with phases of exploration a...
متن کاملRaynaud's phenomenon.
Vascular acrosyndromes constitute a common reason for physician visits. They are associated with connective tissue disease; for example, 90% of patients with scleroderma experience Raynaud's phenomenon. The rheumatologist must strive to establish the diagnosis, to identify a potential underlying cause, and to prescribe effective treatment when the symptoms are incapacitating. Raynaud's phenomen...
متن کاملRaynaud's phenomenon.
Raynauds phenomena (RP) is a commonly encountered clinical manifestation which may be primary or secondary to underlying disease. There is imbalance between vasoconstricting and vasodilating factors. Physical examination, nailfold capillaroscopy and immunological tests can differentiate primary from secondary RP. Treatment involves prevention of RP so that permanent ischemic damage i.e. gangren...
متن کاملNorthrop's Phenomenon
1. Evidence has been found that Northrop's phenomenon (so called by us) is produced in the digestion of casein or hemoglobin brought about by trypsin, papain, and pepsin either crude or crystalline in the presence of gelatin. 2. Anson's and Kunitz' methods permit the measure of proteolytic activity of any protease on casein or hemoglobin substrate in the presence of gelatin, even in very small ...
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ژورنال
عنوان ژورنال: Nature
سال: 1875
ISSN: 0028-0836,1476-4687
DOI: 10.1038/011249a0