| abstract |
Embodiments of the present invention are drawn to pure forms of human or simian immunodeficiency virus trimeric gp120/gp41 Env protein (Env trimers) and methods for making them. These embodiments address the need for an authentic immunogen lacking uncleaved gp160 Env protein and/or other forms of Env, such as gp41 "stumps" dissociated from gp120, which interfere with neutralizing antibody production in a vaccinated subject. |