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To address this problem , we present new low - temperature ( 5 K ) absorption , fluorescence , and hole - burned ( HB ) spectra for CP29 proteins from spinach , which are compared with the previously reported data .
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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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