19287
The system consists of a multi - layered disposable polymer disc and a modified commercial DVD reader with rotational control for sample handling , temperature control for optimized bioassay , a photodiode array for detection , and software for signal processing and user interface - all the necessary components required for a truly integrated lab - on - a - chip system , with the capability to deliver high - resolution images down to 1 mu m in size .
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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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