Hepatitis B virus subtypes ad and ay among blood donors in the Greater Los Angeles area.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001771:Blood Banks; D001782:Blood Donors; D002140:California; D004586:Electrophoresis; D005260:Female; D006511:Hepatitis B Antigens / Q000032:analysis* / Q000145:classification; D006801:Humans; D005779:Immunodiffusion; D007279:Injections, Subcutaneous; D008297:Male; D008875:Middle Aged; D019966:Substance-Related Disorders
D006511:Hepatitis B Antigens