FLT3LG and neoplasm: The groups RT and RT+Flt3-L (RT) demonstrated a delay in primary (30 ±10 days) and secondary (23 ±7 days) tumour growth as compared to the groups untreated and Flt3-L (non-RT; primary 15 ±7 days; secondary 17 ±13 days) (Fig 2A and 2B; P<0.05).