7810
Western blot analysis revealed two cleavage products of approximately 68 kDa and 45 kDa after induction of apoptosis .
 protein: 45 kDa; protein: 68 kDa
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: 45 kDa, 68 kDa 
Answer:
 protein: 45 kDa; protein: 68 kDa