3580
Transfection of an expression vector containing ORF2 but not full length cDNA was able to transform NIH3T3 cells and induce tumors in nude mice .
 DNA: full length cDNA; cell line: NIH3T3 cells; DNA: ORF2; DNA: expression vector
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: full length cDNA, NIH3T3 cells, ORF2, expression vector 
Answer:
 DNA: full length cDNA; cell line: NIH3T3 cells; DNA: ORF2; DNA: expression vector