title: Independent HBS antigen occurrence on HLA system.
mesh_terms: D002908:Chronic Disease; D005260:Female; D005787:Gene Frequency; D006680:HLA Antigens / Q000235:genetics*; D006238:Haploidy; D006505:Hepatitis / Q000235:genetics* / Q000276:immunology; D006514:Hepatitis B Surface Antigens; D006801:Humans; D008297:Male
chemical_list: D006680:HLA Antigens; D006514:Hepatitis B Surface Antigens