Figure 1From: Rectal microbicides: clinically relevant approach to the design of rectal specific placebo formulationsRheological profiles of the four rectal microbicide placebos. The aqueous gel (1A) exhibits pseudoplastic behavior, the aqueous fluid (1B) exhibits Newtonian behavior, the lipid gel (1C) is thixotropic, and the lipid fluid (1D) is Newtonian.Back to article page