1579
However , we could not find the homologous regions with guanine nucleotide exchange factors or GTPase - activating proteins in the c - cbl gene .
 GENE: guanine nucleotide exchange factors; GENE: GTPase - activating proteins; GENE: c - cbl gene
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: guanine nucleotide exchange factors; GENE: GTPase - activating proteins; GENE: c - cbl gene