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The virulence defect conferred by mutations in the phoP -phoQ two-component regulatory system is not completely explained by alterations in resistance to cationic proteins and involves the control of other proteins necessary for S. typhimurium survival within macrophages .
 DNA: -phoQ; protein: cationic proteins; DNA: phoP; cell type: macrophages
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:
 DNA: -phoQ; protein: cationic proteins; DNA: phoP; cell type: macrophages