Cross-clade reactivity of the anti-Tat antibodies.

<p>The antibody titers were determined by incubating serially diluted antisera in triplicate microtiter wells coated with recombinant Tat from subtypes A, B, C and D. The x-axis represents the serum dilution and the y-axis to mean absorbance + SD. Representative data of two or more independent experiments are shown.