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The " Volvox " algae are among the simplest organisms to exhibit that division of labor between two completely different cell types , and as a consequence include death of somatic line as a regular , genetically regulated part of its life history .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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