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Expression of nucleoside diphosphate(NDP) kinase , which is homologous to the nm23 gene product in a variety of species, has been found to be inversely associated with metastatic potential .
 protein: nucleoside diphosphate(NDP) kinase; DNA: nm23 gene; protein: nm23 gene product
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: nucleoside diphosphate(NDP) kinase, nm23 gene, nm23 gene product 
Answer:
 protein: nucleoside diphosphate(NDP) kinase; DNA: nm23 gene; protein: nm23 gene product