7876
In contrast, in C57MG fibroblast cells , lithium inactivates GSK-3beta and induces Tcf-controlled transcription .
 GSK-3beta, C57MG fibroblast cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 GSK-3beta, C57MG fibroblast cells