Herpes Simplex Virus Type 1, strain MacIntyre (HSV-1, Human Herpesvirus 1, HHV-1). Family: Herpesviridae, subfamily: Alphaherpesvirinae, genus: Simplexvirus. Enveloped DNA virus. Viral DNA isolated from sucrose gradient purified HSV-1MacIntyre quantitated using real time PCR and supplied at a concentration of 1 to 2 x 104 copies/µl in 250 µl.