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Chloramphenicol acetyl transferase ( CAT ) assays using the HIV-1 (-139)long terminal repeat-CAT construct showed no PMA induction of CAT activity in these subclones (unlike the parental line and other subclones).
 protein: CAT; DNA: HIV-1 (-139)long terminal repeat-CAT construct; protein: CAT; protein: Chloramphenicol acetyl transferase
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: CAT; DNA: HIV-1 (-139)long terminal repeat-CAT construct; protein: CAT; protein: Chloramphenicol acetyl transferase