ARG1-positive tumours were also found primarily in the upper quartiles of mitotic counts per high-power field, with 10/33 (30%) of the tumours having mitotic counts per HPF in the 3rd quartile and 13/33 (39%) with mitotic counts per HPF in the 4th quartile (p < 0.001) (Table 1). Here, ARG1 is linked to neoplasm.