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Table 2 The scale used for evaluation of CD25, CD56, CD68, CD69, and CD16 antigens expression.

From: Comparison of RCAS1 and metallothionein expression and the presence and activity of immune cells in human ovarian and abdominal wall endometriomas

Antigen Immunoreactivity
  0 1+ 2+ 3+ 4+
CD25 Lack of positive cells Single positive cells 1–5 positive cells/1 hpf More than 5 positive cells/1 hpf -
CD56 Lack of positive cells Single positive cells 1–5 positive cells/1 hpf More than 5 positive cells/1 hpf -
CD69 Lack of positive cells Single positive cells 1–5 positive cells/1 hpf More than 5 positive cells/1 hpf -
CD68 Lack of positive cells 1–5 positive cells/1 hpf 6–10 cells/1 hpf 11–20 positive cells/1 hpf More than 20 positive cells/1 hpf
CD16 Lack of positive cells 1–5 positive cells per 1 hpf 6–10 cells/1 hpf 11–20 positive cells/1 hpf More than 20 positive cells/1 hpf