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Histological analysis has long been considered a cornerstone of biomedical science, offering researchers and clinicians unparalleled insight into the microscopic architecture of biological tissues. As Fischer et al. (2008) note, advances in staining methodology have significantly enhanced diagnostic accuracy across a range of pathological conditions. Central to this progress is the haematoxylin and eosin (H&E) staining technique, which remains the most widely employed method in routine histopathological practice worldwide.

The H&E staining protocol operates through a well-established dual-dye mechanism. Haematoxylin, a basic dye, binds selectively to acidic structures such as nuclei and ribosomes, producing a characteristic blue-purple coloration (Johnson, 2022). Eosin, conversely, is an acidic dye that stains basic structures including cytoplasm and extracellular matrix components in varying shades of pink and red. This complementary interaction enables histologists to differentiate between nuclear and cytoplasmic compartments with remarkable precision (Fischer et al., 2008).