Histopathology is a scientific study of disease at the tissue and cellular levels. Despite an old practice, the histopathology reserved one of the substantial sections of disease studies, both and medical and veterinary field in the modern scientific era. During the current molecular age, some improvements have been made in this practice. The early modification in histopathology is the introduction of immunohistochemistry, which playing an incredible role in tumor diagnosis. The new developments, including digital pathology, multiplex immunohistochemistry, immunofluorescence, brain mapping, neuroimaging studies and artificial neuronal networking are emphasizing novel technologies and almost changed the previous ordinary diagnostic methods. The existing molecular pathobiology, was evolved mainly from biopsy and autopsy. Currently, the revolutions in molecular biology and in the technology of gene array have developed. The telepathology helping the society and deals with histopathological pictures. It is not far, when molecular techniques would be applied to the lesions prior to its paraffinizations, and the histopathological experts would previously recognize what to study in the sections. The productive move from a visual morphological explanation to obscure molecular science, may be delay, but ultimately be there. This chapter tries to express few of such characteristics of the histopathological practice which assured to be the fast progressing portion of the modern science.
Part of the book: Histopathology