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However, we show that mutant forms of E1A that no longer bind p300/CBP can still interact directly with Stat1 (via E1A N-terminal and Stat1 C-terminal residues ) and block IFNgamma-driven, Stat1 -dependent gene activation and consequent function during early-phase infection in the natural host cell .
 protein: Stat1; protein: E1A; protein: p300/CBP; protein: Stat1; cell type: natural host cell
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: Stat1, E1A, p300/CBP, Stat1, natural host cell 
Answer:
 protein: Stat1; protein: E1A; protein: p300/CBP; protein: Stat1; cell type: natural host cell