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In a fourth cell line , A1-VDR , the receptor for 1,25(OH)2D3 had a low binding capacity and 25(OH)D3-24-hydroxylase activity was not detectable.
 cell line: cell line; cell line: A1-VDR; protein: 25(OH)D3-24-hydroxylase
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 line: cell line; cell line: A1-VDR; protein: 25(OH)D3-24-hydroxylase