14587
Second , the siRNA spotted array was transferred to a reversibly sealed PDMS - based screening platform containing microchannels designed to enable efficient cell loading and transfection of mammalian cells while preventing cross - contamination between experimental conditions .
 Chemical: PDMS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: PDMS