3104
Both B and T lymphocytes diversify their antigen receptors through RAG1 / 2 mediated recombination , but B cells undergo two additional processes - - somatic hypermutation ( SHM ) and class - switch recombination ( CSR ) , both initiated by activation - induced cytidine deaminase ( AID ) .
 Anatomy: B; Anatomy: T lymphocytes; Anatomy: B cells
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: B; Anatomy: T lymphocytes; Anatomy: B cells