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The present review puts up - to - date the research on the biological activities and applications of polysaccharides , active biocompounds synthesized by marine unicellular algae , which are , most of the times , released into the surrounding medium ( exo - or extracellular polysaccharides , EPS ) .
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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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