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Here, we show that loss of GATA-3 expression by developing Th1 cells requires IL-12 signaling through Stat4 and does not simply result from an absence of IL-4 .
 protein: IL-4; protein: IL-12; cell type: Th1 cells; protein: GATA-3; protein: Stat4
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-4, IL-12, Th1 cells, GATA-3, Stat4 
Answer:
 protein: IL-4; protein: IL-12; cell type: Th1 cells; protein: GATA-3; protein: Stat4