Human vulva carcinoma cells are negative for decorin expression in vivo.
The panel consists of serial sections of a representative human vulva
carcinoma tissue sample analyzed with hematoxylin and eosin staining
(A-C), ISH for decorin (D-F), and IHC for decorin (G-I). The frames on
the left side of the panels A, D, and G mark non-malignant tissue areas,
shown magnified in panels B, E, and H, respectively. The frames on the
right side of the panels A, D, and G mark carcinoma areas, and they are
shown magnified in panels C, F, and I, respectively. Arrows in A and D
mark the border between malignant and non-malignant tissue areas. Arrows
in C and F point to squamous carcinoma cells. Positive ISH signal for
decorin can be seen in purple (D and E). Positive immunostaining for
decorin can be seen in brown in G and H. Note that there is a total
absence of decorin mRNA expression and immunoreactivity in panels F and
I that represent tissue areas populated by malignant cells. Scale bar in
A, D, and G 500 µm and in B, C, E, F, H, and I 200µm. Abbreviations: HE,
hematoxylin and eosin; ISH, in situ hybridization; IHC,
immunohistochemistry.