The development of reliable, eco-friendly processes for the synthesis of nanoscale materials is an important aspect of nanotechnology. In this paper, we report on the use of an alkalotolerant actinomycete (Rhodococcus sp.) in the intracellular synthesis of gold nanoparticles of the dimension 5-15 nm. Electron microscopy analysis of thin sections of the gold actinomycete cells indicated that gold particles with good monodispersity were formed on the cell wall as well as on the cytospasmic membrane. The particles are more concentrated on the cytoplasmic membrane than on the cell wall, possibly due to reduction of the metal ions by enzymes present in the cell wall and on the cytoplasmic membrane. The metal ions were not toxic to the cells and the cells continued to multiply after biosynthesis of the gold nanoparticles.

A retrospective review of 199 patients with penile cancer revealed that the extent of inguinal nodal metastasis was related to survival after radical ilioinguinal dissection. Patients with unilateral inguinal nodal involvement had a 56 per cent median 5-year survival rate, whereas those with bilateral inguinal nodal metastasis, extranodal tumor extension or iliac nodal involvement had a 9 per cent median 5-year survival rate.

The dermoid cyst is an uncommon clinicopathological lesion of developmental origin. The term dermoid cyst is used to describe 3 cysts that are closely related histologically: dermoid cyst, epidermoid cyst, and teratoma. Epidermoid and dermoid cysts are benign nature, which may occur anywhere in the body, but most predominantly in the ovary and scrotal regions. Only about 7% are found in the head and neck. The occurrence of such cysts in the oral cavity is extremely rare, with approximately 1.6% located in this area. The floor of the mouth is one of the most commonly affected area, however, these cysts can also be found in the tongue, lips, buccal mucosa and jaw bones. There is always a difficulty of making a correct diagnosis of these lesions with clinical examinations and conventional radiography. To achieve a diagnosis and to develop correct surgical strategy specialized imaging examinations such as ultrasonography (US), computed tomography (CT), Magnetic Resonance Imaging (MRI) and histopathological examination should be carried out. Treatment comprises total surgical excision the approach remains dictated logically by the cyst's location. Ample understanding and vigilance about this slow growing painless mass is essential not only because of the symptoms it produces but also due to its malignant potential. When dermoid cysts occur on the floor of the mouth, they may enlarge to such an extent that they can interfere with deglutition and produce respiratory obstruction. Early diagnosis and treatment are essential for these cystic entities.

We report a retrospective study of 18 patients with renal sarcomas seen between 1950 and 1980. Renal sarcomas are highly malignant neoplasms and the over-all prognosis is poor, with only 2 long-term survivors in this series. Radical nephrectomy seems to be the treatment of choice.

Out of the 27 cases of seropositive dengue there was one death due to dengue shock syndrome. Thrombocytopenia may not always be a feature of dengue.