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Although IL-2 secretion was increased in the presence of anti- CD28 MoAb , neonatal T cell IL-2 production remained lower than in adults .
 protein: IL-2; protein: anti- CD28 MoAb; cell type: neonatal T cell; protein: IL-2; protein: CD28
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: IL-2; protein: anti- CD28 MoAb; cell type: neonatal T cell; protein: IL-2; protein: CD28