4917
Northern blot analysis revealed the expression of LIMK - 1 mRNA predominantly in the brain and the expression of LIMK - 2 mRNA in various tissues in the rat .
 LIMK - 1 mRNA, LIMK - 2 mRNA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 LIMK - 1 mRNA, LIMK - 2 mRNA