Objective(s): In the past few decades, variety of foetal, embryonic and adult stem and progenitor cells have been tried with conflicting outcome for cell therapy of central nervous system injury and diseases. Cellular characteristics and functional plasticity of Globose basal stem cells (GBCs) residing in the olfactory epithelium of rat olfactory mucosa have not been studied in the past by the ...

•Desmoplastic small round cell tumor of the ovary is a rare clinical entity with poor prognosis.•Accurate diagnosis utilizes a combination of histological, immunohistological, and cytogenetic findings.•This disease should be kept on the differential diagnosis in young women with widespread disease on presentation.

A 46 year old man with coeliac disease and upper airway obstruction was thought to have undifferentiated carcinoma of the trachea. Subsequent immunohistological examination showed that the neoplasm was a T cell lymphoma. He had combination chemotherapy and is alive and well seven years after diagnosis.

Angiosarcoma of the nasal cavity is extremely rare. We present a case of angiosarcoma of the nasal cavity in an eight-year-old boy. He was treated with medial maxillectomy via lateral rhinotomy. The histological diagnosis was confirmed by immunohistological stain with Factor VIII-like antigen. Magnetic resonance imaging (MRI) was useful in determining the extent of the tumour.

The method involves impregnation of fixed embryos with a solution of plexiglass. The solvent is evaporated slowly. Blocks of plexiglass containing the specimen are thus formed. Sections (1-2 microns) are stretched and attached by an unconvential method. Immunohistological techniques allow antigen localization in a combination of high resolution, excellent quality of the sections and low backgro...