1905
The Valpha and Vbeta domains have the canonical features of known teleost and mammalian TCR V domains , including conserved residues in the beginning of FR2 and at the end of FR3 .
 GENE: Valpha; GENE: Vbeta domains; GENE: teleost and mammalian TCR V domains; GENE: FR2; GENE: FR3
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: Valpha; GENE: Vbeta domains; GENE: teleost and mammalian TCR V domains; GENE: FR2; GENE: FR3