Fig. 4From: Tumor-B-cell interactions promote isotype switching to an immunosuppressive IgG4 antibody response through upregulation of IL-10 in triple negative breast cancersIgG4 + cells correlate with medium–low B cell density. Quantification of CD20 positive cells in tissue sections by low, medium and high density. IgG + cells are represented in black, IgG4- cells are represented in whiteBack to article page