2857
Inhibition of c - Jun amino - terminal kinase ( JNK ) blocked type III collagen expression in LRP - 1 - deficient MEFs , suggesting regulation of JNK activity as a mechanism by which LRP - 1 controls mRNA expression .
 MEFs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 MEFs