1559
To identify the DNA sequences that cis - regulate the expression of the rat liver pyruvate kinase ( L - PK ) genes , a series of constructs in which the chloramphenicol acetyltransferase reporter genes is driven by various deleted fragments of the 3200 base pairs ( bp ) upstream of the L - PK gene cap site have been assayed for transient expression after introduction into hepatoma HepG2 cells , rat hepatocytes in primary culture , fibroblast LTK - cells , myogenic C2C12 cells , and CHO cells .
 GENE: rat liver pyruvate kinase; GENE: L - PK; GENE: chloramphenicol acetyltransferase reporter genes; GENE: L - PK gene cap site
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: rat liver pyruvate kinase, L - PK, chloramphenicol acetyltransferase reporter genes, L - PK gene cap site 
Answer:
 GENE: rat liver pyruvate kinase; GENE: L - PK; GENE: chloramphenicol acetyltransferase reporter genes; GENE: L - PK gene cap site