2154
Northern blot analysis with GPR37 probes revealed a main 3 . 8 - kb mRNA and a less abundant 8 - kb mRNA , both expressed in human brain tissues , particularly in corpus callosum , medulla , putamen , and caudate nucleus .
 GENE: GPR37
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: GPR37