title: Long-term delta antigenaemia without appearance of delta antibody in two immunodeficient patients.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000276:immunology*; D000328:Adult; D006508:Hepatitis Antibodies / Q000032:analysis*; D006511:Hepatitis B Antigens / Q000032:analysis*; D003699:Hepatitis D / Q000276:immunology; D003698:Hepatitis Delta Virus / Q000276:immunology*; D035923:Hepatitis delta Antigens; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D006508:Hepatitis Antibodies; D006511:Hepatitis B Antigens; D035923:Hepatitis delta Antigens; C442244:hepatitis delta virus large antigen