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Table 2 Assigned values of HER2-IHC scoring among fifteen cases of HER2 IHC slides

From: Challenges and improvements in HER2 scoring and histologic evaluation: insights from a national proficiency testing scheme for breast cancer diagnosis in China

Case

P1

P2

P3

P4

P5

P6

P7

P8

P9

P10

P11

P12

P13

P14

P15

HER2

3+

1+

1+

2+

2+

2+

2+

2+

3+

0

1+

0

1+

0/1+

1+