1416
Such an increase in the steady - state testicular TIMP - 2 mRNA level apparently is not the result of an up - regulation by germ cells because germ cells cocultured with Sertoli cells failed to elicit an increase in the Sertoli cell steady - state TIMP - 2 mRNA level .
 GENE: testicular TIMP - 2 mRNA; GENE: TIMP - 2 mRNA
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: testicular TIMP - 2 mRNA; GENE: TIMP - 2 mRNA