Strong punctate positivity in the extracellular areas ( seems to be: could be membraneous?).

I do not know the distribution pattern of this protein.

However, I had three abs against this protein from ECM; mostly similar results. However, quite different from results given by HPA, on same tissue/different organism.

Comments welcome.

A positive astrocyte to the right of the image shows one of its processes in contact with the capillary

Cytoplasmic positivity in cells lining the bronchioles and sparsely in alveolar walls

Thank you to my dear friend and colleague, Dr Mehmet Bozkurt, for tissues from several species that have been most useful in assessing specificity of primary Abs.

Positivity appears confined to the overlying mucosal cell nuclei.