Table 2.

 Immunohistochemical localisation and staining intensity of DLK1 in Wilms tumours

Tumour group	Tumour no	Epi	Bl	Str
LOI tumours with myogenesis	LOI-15 and LOI-16	−/+	−/+	+/++ (myogenic)
LOI tumours without myogenesis	LOI-11	−/+	–	+++ (macrophage)
WT1 mutant tumours	WT1-1 to WT1-8	−/+	−/+	++/+++ (myogenic)
ILNRs	WT1-1 and WT1-2	+/++	−/+	–
LOH tumours	LOH-2 and LOH-3	−/+	−/+	–

Each column shows the range of expression: no detectable expression, –; mild, +; moderate, ++; high expression, +++.

Bl, blastemal; Epi, epithelial; ILNRs, intralobar nephrogenic rests; LOH, loss of heterozygosity; LOI, loss of imprinting; Str, stromal.