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Using in situ hybridization on sections from non HIV hyperplastic lymph nodes , we found that the gene of the 105 kDa precursor of p50 was overexpressed in the light zone of germinal centers , with a network aspect, which suggested the involvement of follicular dendritic cells ( FDC ).
 cell type: FDC; protein: 105 kDa precursor; protein: p50; cell type: follicular dendritic cells
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: FDC, 105 kDa precursor, p50, follicular dendritic cells 
Answer:
 cell type: FDC; protein: 105 kDa precursor; protein: p50; cell type: follicular dendritic cells