1993
Retinoic acid , which inhibits the progression of certain cancers , repressed v - src - induced MMP - 1 transcription .
 GENE: v - src; GENE: MMP - 1
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: v - src; GENE: MMP - 1