12974
Individual nanorods in live U2OS cells could be followed in 3 dimensions for over 30 min , with a photon noise limited accuracy , and a time resolution of 50 ms in 2D and 500 ms in 3D .
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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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