A method for testing human blood for the presence of antibodies against the viral etiological agent of AIDS

摘要

(1) Envelope protein of an acquired immune deficiency syndrome (AIDS) virus comprising the amino acid sequence of formula (I), or a fragment of it, is new. - Expression vector comprising a gene coding for an envelope protein of an AIDS virus downstream of a promoter sequence enabling transcription, translation and therefor expression of the envelope protein in a host cell is new. - Transformant carrying an expression vector as defined above is new. - Prodn. of envelope protein of AIDS virus comprises cultivation of a host cell transformed with an expression vector as defined above, followed by extrn. and isolation of the protein.