From figure 20.5 Use chapter 17 as a reference guideline for interpretation. Lanes numbered 1 through 6 are different patient sera and A through H are increasing dilutions of these sera. Identify the samples that show Brucella infection and give their titers. Which positive sample has the fewest antibodies? What conclusion can be made if a second test done on this patient a week later indicates no change? What is the conclusion if all lane wells are positive for this patient?

1 2 3 4 5 6 1:10 A 1:201 1:320 1:1280