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Human fibroblasts contained roughly the same level of microsomal p-nitrophenyl sulfatase activity as that previously observed in hepatic microsomes .
 cell type: Human fibroblasts; protein: p-nitrophenyl sulfatase; cell type: hepatic microsomes
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:
 cell type: Human fibroblasts; protein: p-nitrophenyl sulfatase; cell type: hepatic microsomes