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We report the cloning and characterization of a novel Grb2-like adaptor molecule designated as Grb2-related protein of the lymphoid system ( GrpL ).
 GrpL, Grb2-related protein of the lymphoid system, Grb2-like adaptor molecule
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:
 GrpL, Grb2-related protein of the lymphoid system, Grb2-like adaptor molecule