Immune responses against HER2/neu and WT1 in 76 HLA-A*02:01⁺ women and 38 HLA-A*02:01⁺ men (cross-sectional study group I). IFN-γ mRNA expression upon antigen-specific stimulation with the TAAs HER2/neu and WT1 in nulligravidous as well as primi- or multiparous women compared with men. The dashed line indicates the threshold for positive immune responses (relative expression level of 2.0). Bars represent the median of a subgroup. Closed triangles represent women, and open triangles represent men.