Table II.

Clinicopathological features of samples included in the selection of endogenous control genes.

Samplea	Year of diagnosis	Fuhrman grade	AJCC stage
1	1989	IV	IV
2	1990	II	I
3	1991	III	IV
4	1992	II	II
5	1993	III	IV
6	1994	II	II
7	1995	II	III
8	1996	III	IV
9	1997	II	I
10	1998	IV	III
11	1999	II	I
12	2000	III	III
13	2001	II	I
14	2002	III	III
15	2003	II	I
16	2004	III	IV
17	2005	II	I
18	2006	III	IV
19	2007	II	IV
20	2008	II	I
21	2009	III	II

^aFor each patient, malignant and adjacent benign tissue were used (n=42). AJCC, American Joint Committee on Cancer.