Answer
The person can be desensitized to poison oak by giving small doses of the antigen to produce the secondary antibody IgG, which intercepts binding of IgE and T-cells, hence desensitizing.
Work Step by Step
The person can be desensitized to poison oak by giving small doses of the antigen to produce the secondary antibody IgG, which intercepts binding of IgE and T-cells, hence desensitizing.