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Lymphocytes were gated according to forward scatter and side scatter and T helper cells were identified using CD4 as a cell surface marker (n = 6). A representative cytogram is presented with the right upper quadrant showing CRTH2+/CD4+ lymphocytes (A). Histograms showing no staining, isotype control and CRTH2+ labelled lymphocytes (B), amniocytes (C) and myocytes (D), (n = 5).
