6066
A much less expensive solution than UW , containing only K ( + ) - lactobionate , KH2PO4 , MgSO4 and raffinose , can be used successfully for preservation of rat hepatocytes for 24 hr for drug transport studies .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None