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The mammalian proto - oncogene Cbl and its cellular homologues in Caenorhabditis elegans ( Sli - 1 ) and Drosophila ( D - Cbl ) are negative regulators of some growth factor receptor signaling pathways .
 Anatomy: cellular
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: cellular