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Table 1 pThr187-p27, "plain"-p27 and MIB-1 expression in normal tissues.

From: p27Kip1 is expressed in proliferating cells in its form phosphorylated on threonine 187

Tissue type

Phospho-p27

"plain"-p27

MIB-1

Normal squamous epithelium skin, tonsil, larynx, cervix.

   

Parabasal layer

+++

-

++++

intermediate

-

++++

+

Granular layer

-

+++

-

Germinal centers Tonsil, lymphnode, apendix

   

Mantle cells

-

++++

-

Centroblasts

+++

-

++++

Centrocytes

-

+++

-

Bowel Crypt cells

   

Deep

+++

-

++++

superficial

-

++++

-

Placenta

   

trophoblast

+++

-

++++

syncytiotrofoblast

-

++++

-

Kidney

+/-

+++

+/-

Lung

+/-

+++

+/-

Thyroid

+/-

+++

+/-

Prostate

+/-

+++

+/-

  1. Key: ++++ >80% of positive cells.
  2. +++ 50–80% of positive cells
  3. ++ 10–50% of positive cells
  4. + <10% of positive cells
  5. +/- Only occasional staining
  6. - Negative staining