Salivary protein, which prevents transmission of human immunodeficiency virus via saliva is:
Secretory leukocyte protease inhibitor (SLPI) is found in human saliva, nasal secretions, tears, cervical mucus and seminal fluid. It is believed to be responsible for the anti-HIV properties of external secretions.
Sialoperoxidase
Secretory IgA
Salivary leukocyte proteinase inhibitor
Histidine rich proteins