29948
With this system we resolve single - channel currents from several types of bacterial ion channels , including fluctuations of a single alamethicin channel at a bandwidth of 1 MHz which represent the fastest single - ion - channel recordings reported to date .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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