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The extracellular ice nuclei of Fusarium avenacum IFO 7158 (FEIN) were stable at pH levels from 2 to 12 and tolerated temperatures up to 40 degrees C. In an activity of the FEIN, proteins were important, however, saccharide and lipid which were proved to be a part of components of bacterial ice nuclei did not participate.
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Hasegawa et al. (1994) studied this question.
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