CD44 and neoplasm: Mice with subcutaneous tumours established by LLC cell inoculation were randomised into three groups on day 0: a Ctrl group that did not receive CD44-IR700, an intravenous CD44-IR700 administration group (CD44-IR700_IV), and an intratumoural CD44-IR700 administration group (CD44-IR700_IT) (Fig. 3a).