occasional atypical lymphocytessignificance of atypical lymphocytesmononucleosis atypical lymphocyteselevated atypical lymphocytesincreased atypical lymphocytesatypical reactive lymphocytesabsolute atypical lymphocyteshigh atypical lymphocyte countrare atypical lymphocytesatypical lymphocytes monoatypical leukocytesatypical lymphocytes on blood film