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Saccharomyces cerevisiae has been used widely both as a model system for unraveling the biochemical , genetic , and molecular details of gene expression and the secretion process , and as a host for the production of heterologous proteins of biotechnological interest .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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