How does Haemophilus appear in histological sections?
In histological preparations, Haemophilus species can be challenging to identify due to their small size and pleomorphic nature. Typically, they appear as tiny coccobacilli, often in pairs or short chains. They are best visualized using specific staining techniques like Gram staining, where they appear as pink (due to their Gram-negative cell wall), or with immunohistochemical methods that highlight bacterial antigens.
