The PSE staining solution consists of the essential components eosin bluish (C.I.: 45400), phloxin B (C.I.: 45410) and acid fuchsin (C.I.: 42685). It is used in histology to stain cell structures such as cytoplasm, collagen fibers and muscle fibers red to purple, while cell nuclei are stained blue or purple when previously treated with a nuclear dye such as hematoxylin.

There are also other staining solutions with similar composition, such as the Eosin-Y-Phloxin-B (EPB) staining solution, which contains eosin Y and phloxin B, and the Wright-Giemsa stain, which uses a combination of eosin Y and Giemsa dye. These stains are also used in histology and hematology to visualize cell structures and tissue components.

The compositions of these staining solutions vary in the concentration and combination of dyes to ensure the best possible visualization of cell structures and tissue components for each application. The PSE staining solution is just one of the many staining solutions used for the study of cellular and tissue structures in histology due to their specific composition.
.