<prompt> Least concentration of human immunodeficiency virus is seen inSalivaCSFBloodSemen  <response>: Viral load of HIV is maximum in blood, genital secretions like semen, and CSFIt also found in breast milk, saliva, lymphocytes, cell-free plasma, cervical secretions, saliva, tears, minimal in urineSaliva can contain fibronectin glycoproteins, which prevent transmission of the virus.A salivary protein called secretory leucocyte protease inhibitor also has anti-HIV activity 