1510
Involved introns contain homology to recombination signal sequence ( RSS ) heptamers present in the V ( D ) J region of the T lymphocyte receptor gene .
 Anatomy: T lymphocyte
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: T lymphocyte 
Answer:
 Anatomy: T lymphocyte