8381
Several intracellular signaling proteins , such as CBL and VAV , were phosphorylated on tyrosine in response to CD80 , CD86 , and anti-CD28 mAb .
 CD80, CBL, VAV, signaling proteins, anti-CD28 mAb, CD86
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 CD80, CBL, VAV, signaling proteins, anti-CD28 mAb, CD86