8418
We integrated electrode and cell channels into a single poly ( dimethylsiloxane ) ( PDMS ) chip , eliminating entirely the need to align electrodes with microchannels .
 poly ( dimethylsiloxane ), PDMS
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 poly ( dimethylsiloxane ), PDMS