Choroid Plexus

The choroid plexus consists of a richly vascularized layer of leptomeninges  (piamater and arachnoidea ), which is covered by a single-layered cuboidal epithelium 1 . The plexus structure is tree-like. In the ciliated connective tissue occur fibroblasts as well as plasma cells, mast cells and macrophages. This preparation contains many vessels with erythrocytes 2 . The cuboidal epithelium of the choroid plexus stains heavily with Eosin. Note the large,   round central nuclei.

1 Epithelium of the choroid plexus

2 Capillaries with erythrocytes

3 Cerebrospinal fluid (CSF) with cells

Stain: alum hematoxylin-eosin; magnification: × 300

References

Kuehnel, W.(2003). Color Atlas of Cytology, Histology, and Microscopic Anatomy. 4^th edition . Institute of Anatomy Universitätzu Luebeck Luebeck, Germany . Thieme Stuttgar t · New York .