1096
The smaller of the two proteins ( 50 kDa ) was indistinguishable from the classical 1,25(OH)2D3 receptor and, similar to the classical 1,25(OH)2D3 receptor , was upregulated in a dose-dependent fashion by 1,25(OH)2D3 .
 protein: 1,25(OH)2D3 receptor; protein: 1,25(OH)2D3 receptor; protein: 50 kDa
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: 1,25(OH)2D3 receptor; protein: 1,25(OH)2D3 receptor; protein: 50 kDa