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Table 1 The semi-quantitative analysis result of AQP4 immunohistochemistry staining in articular cartilage

From: Overexpression of aquaporin 4 in articular chondrocytes exacerbates the severity of adjuvant-induced arthritis in rats: an in vivo and in vitro study

Group

Grade of AQP4 positive proportion

-

+

++

+++

++++

Normal

3

9

2

1

0

AIA

0

3

4

5

3

  1. The positive proportion is graded as follows: (−), < 5%; (+), 5–25%; (++), 26–50%; (+++), 51–75%; (++++), > 75%
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