From: Differential expression of topoisomerase IIα protein in salivary gland carcinomas: histogenetic and prognostic implications
TopoIIα expression
Histological grade
Number of cases
Low (0 and 1+)
High (2+ and 3+)
Grade 1
n = 7
7
0
Grade 2
5
2
Grade 3
n = 3
3