| 词汇 | lectin |
| 释义 | lectin noun[ C or U ] uk /ˈlek.tɪn/ us /ˈlek.tɪn/ a type of protein mainly found in plants that binds(= chemically joins) to carbohydrates (= substances such as sugar): （主要出现在植物中）凝集素 Kidney bean lectin is a natural toxin that can cause stomach aches and vomiting if the beans are not properly cooked.肾豆凝集素是一种天然毒素，如果豆子煮得不好，会引起胃痛和呕吐。 Scientists at the University of Liverpool have found that a protein called lectin found in edible mushrooms can target cancer cells and stop them multiplying. We did a study to assess whether intact peanut lectin enters the blood after eating peanuts. The lectin may bind to several glycoproteins on the cell surface. Proteins called lectins in certain dried pulses, like kidney beans, cause a reaction unless well cooked. Lectins (carbohydrate-binding proteins), are known to play a role in defence responses against a range of bacteria, fungi, and viruses in plants. Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate homologous series inorganic isopropanol ketone melamine methyl orange monosaccharide mothball propellant saline soluble sulphide Examples of lectinlectin Variations in extent of lectin binding within populations may be related to moulting. More specifically, the potential involvement of a lectin-carbohydrate interaction will be investigated. Stereological analysis showed that there was an increase of the tegumental surface area in lectin-treated flukes. Developmentally, this idea is supported by the early expression of pea lectin (together with vicilin) during cotyledon development. Lectin-ferritin binding on spontaneously diabetic and control rat retinal microvasculature. Interactions between carbohydrates in parasites and lectins in fish can be speculated to be both positive and negative. Cells are visualized with lectin histochemistry in paraffin sections. The measurement was performed using three ova for each lectin. Numbers and types of cones were determined using lectin staining in retinal flatmounts and cone-specific antibodies in radial frozen sections. Moreover, the importance of lectin-tegument interaction is emphasized by studies showing that the complement of lectin-reactive carbohydrates changes during larval development. To overcome this problem, pretreatment of oocytes with lectin was undertaken in this study. Ultrastructural localisation of lectin binding sites of zonae pellucidae and plasma membranes of mammalian eggs. In general, cell adhesion induced by lectins is dependent on specific saccharide-containing binding sites on the cell membranes. Ultrastructural localization of lectin binding sites of the zonae pellucidae and plasma membranes of mammalian eggs. This suggests a possible mechanism by which this lectin affects the progression of this disease. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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