Table 2: Keratins expression in non-cancerous breast tissue, where “-” represents negative staining, “+” represents weak positive staining, “++” represents positive staining and “+++” represents strongly positive staining.
|
Normal tissue |
Malignant tissue |
|||
Neutral-basic or acidic |
Acidic |
Neutral-Basic |
Acidic |
Neutral-Basic |
|
Type of keratin |
19 |
5 |
19 |
5 |
|
Breast Complex epithelia |
Basal and myoepithelial cells |
++ |
+++ |
++ |
- |
Luminal cells |
+++ |
+ |
++ |
- |