2831
NH2 -terminal amino acid sequence analysis identified the 140-kDa surface antigen for mAb J393 as CD43/leukosialin , the major sialoglycoprotein of leukocytes .
 140-kDa surface antigen, amino acid sequence, mAb J393, leukocytes, NH2, CD43/leukosialin, sialoglycoprotein
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:
 140-kDa surface antigen, amino acid sequence, mAb J393, leukocytes, NH2, CD43/leukosialin, sialoglycoprotein