Bo van Deurs

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The transfer of protein from the cerebral ventricles to the parenchymal bloodstream in mice was studied by electron microscopy. After perfusion with the protein tracer horseradish peroxidase (HRP; M.W. approx. 40,000) through the cerebral ventricles, the tracer penetrated the ependymal lining of the ventricles and was found in the extracellular space of the(More)
A number of protein toxins from plants and bacteria take advantage of transport through the Golgi apparatus to gain entry into the cytosol where they exert their action. These toxins include the plant toxin ricin, the bacterial Shiga toxins, and cholera toxin. Such toxins bind to lipids or proteins at the cell surface, and they are endocytosed both by(More)
We have analyzed the frequency and distribution of cells expressing estrogen receptor (ER) in cryosections of normal human breast tissue using quantitative microspectrophotometry and the estrogen receptor immunocytochemical assay. We found that the human mammary gland contained a small but distinct population of ER-positive cells, comprising approximately(More)
Interpretation of primary monolayer culture of organs and tissues with different epithelial cell types demands well-defined criteria for distin guishing between such cells. Epithelial components in breast carcinomas comprise, in addition to carcinoma epithelial cells (CEP), at least two epithelial cell types organized in mammary ductules of normal(More)
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