4818
PU.1 ( spi-1 ), a member of the Ets transcription factor family , is predominantly expressed in myeloid and B cells , activates many B cell and myeloid genes , and is critical for development of both of these lineages.
 protein: spi-1; protein: PU.1; protein: Ets transcription factor family
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: spi-1, PU.1, Ets transcription factor family 
Answer:
 protein: spi-1; protein: PU.1; protein: Ets transcription factor family