2445
Studies with human umbilical vein segments exposed to hypoxia also demonstrated increased elaboration of IL-8 antigen compared with normoxic controls.
 protein: IL-8; protein: IL-8 antigen
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: IL-8, IL-8 antigen 
Answer:
 protein: IL-8; protein: IL-8 antigen