Table 2

ECM1 expression in breast cancer specimens, normal epithelium and lymph nodes

ECM1mRNA expression

Positive

Staining grades of ECM1


Tissue type

N

F

rate (%)

-

+

++

+++

χ2


Cancer tissues

41

1.25 ± 0.33A

75.6D

10

22

7

2

Normal tissues

41

0.46 ± 0.10B

9.8E

37

3

1

0

Lymph nodes

41

0.38 ± 0.18C

4.86**

31.7F

28

9

3

1

39.08**


** P < 0.01, P < 0.05 is considered statistically significant

"+", "++" and "+++" for ECM1 immunochemistry staining was all grouped together as "+"

A vs. B and A vs. C: P < 0.05, respectively; B vs. C: P > 0.05

χ2 division:α = 0.05/4 = 0.0125; D vs. E and D vs. F: P < 0.001, respectively; E vs. F: P > 0.0125

Wu et al. BMC Cancer 2012 12:47   doi:10.1186/1471-2407-12-47

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