Figure 5From: High level soluble expression, one-step purification and characterization of HIV-1 p24 proteinTiter of anti-p24 antibodies in the immunized mouse sera determined by indirect ELISA. The prei-mmune serum served as the negative control. Serum samples were diluted at 1/500, 1/2000, 1/8000, 1:32000, 1:128000, 1:512000, 1:2048000, 1:8192000.Back to article page