CD4 and neoplasm: Analysis of the lymphoid immune cell subtypes in MyC-CaP demonstrated an increased tumour infiltrate of CD45+CD4+CD25+FoxP3+ Treg cells (Fig. S8C), and a non-significant reduction in the proportion of CD45+CD3+CD8+ T-cells, in 3 × 5 Gy RT-treated tumours versus untreated controls.