Fig. 2.

IL-10 production by monocytes and macrophages infected with different HIV-1 isolates. (a) Monocytes. (b) Macrophages. The levels of IL-10 in uninfected controls were the same as in Fig. 1a,b. Cell cultures were considered infected if the levels of HIV-p24 antigen in the supernatants were equal to or more than those presented in Table 2. The data represent the mean of three experiments each carried out in duplicate. The error bars represent s.e.m.