997
Other experimental strategies have implicated BSAP in the control of cell proliferation , isotype switching and transcription of the immunoglobulin heavy-chain gene at late stages of B-cell differentiation .
 protein: BSAP; protein: immunoglobulin heavy-chain; DNA: immunoglobulin heavy-chain gene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: BSAP; protein: immunoglobulin heavy-chain; DNA: immunoglobulin heavy-chain gene