4989
Expression of A-myb , but not c-myb and B-myb , is restricted to Burkitt's lymphoma , sIg+ B-acute lymphoblastic leukemia , and a subset of chronic lymphocytic leukemias .
 c-myb, A-myb, B-myb
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:
 c-myb, A-myb, B-myb