Sarkar et al. Table I

Sarkar et al. Table I

TABLE I
**The Expression of MMTV and jun B RNA in Mouse, Rat, and Human Mammary Tissue**

Source of Mammary Tissue		Type of Tissue	RNA Levels (a)
Mouse Strain (b)	age (c)		MMTV	jun B
BALB/C	4	N (d)	2+	3+
	8	N	2+	3+
BALB/cfC3H	6 (e)	N	2+	3+
		T1	2+	3+
		T2	2+	3+
C3H/HeJ	6	N	1+	2+
C3H/OuJ	4	N	1+	2+
	8	N	1+	2+
	10	N	1+	2+
C57BL	4	N	-	2+
	8	N	-	2+
C57BLfGR	4	N	1+	2+
	6 (d)	N	1+	3+
	8	N	2+	3+
R III	4	N	1+	2+
	6 (d)	N	2+	3+
		T1	2+	3+
		T2	2+	4+
GR		T	2+	4+
JYG		T	2+	2+
		T1	1+	2+
		T2	2+	1+
		T3	2+	3+
		T4	1+	1+
		T5	1+	2+
		T6	1+	2+
		T7	2+	2+
		T8
WLCO	4	N	-	-
	9	N	-	1+
Rat	4	N	-	1+
		T1	-	2+
		T2	-	2+
		T3	-	2+
Human		T1	-	1+
		T2	-	2+
		T3	-	2+
		T4	-	2+
		T5	-	3+

(a) 4+, 3+, 2+, 1+, and - indicate very high, high, medium, low, and absence of RNA expression, respectively.
(b) See Materials and Methods section for description of mouse strains.
(c) age in months
(d) N = normal gland, T = tumor
(e) lactating mammary gland