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Effect of increasing concentrations of human immunodeficiency virus (HIV) gp120 on mediator release from four different preparations of HHMCs. HHMCs were incubated (45 min at 37 °C) with the indicated concentrations of gp120. At the end of incubation, the concentrations of histamine (A) and LTC4 (B) were measured in the four supernatants. Each point shows the mean of duplicate determinations. Each symbol represents the results from an individual donor.
