Imidazole-zinc reverse stain utilizing imidazole and zinc ions for protein visualization on electrophoresis gels was originally introduced in the 1990s (1–3). This method is based on the selective precipitation of imidazolate-zinc complex in the gel (3), except zones where proteins or other macromolecules, such as DNA (4–7) or lipopolysaccharide, are present (4,5,8,9). There are several advanta...

background: subglottic stenosis is defined as inflammatory narrowing of the airway. it can be related to trauma, intubation, autoimmune disorders, vascular malformations, infection and congenital abnormalities. pot-wine stain (pws) is a small dermis venous malformation which is present at birth. pws is found on face and neck, but can occur in throat and can cause subglottic stenosis. case repor...

introduction: klippel–trenaunay syndrome (kts) is a rare congenital mesodermal abnormality characterized by varicose veins, cutaneous capillary malformation, as well as bone and soft tissue hypertrophy. case report: a 2-week-old female infant presented to our clinic because of vascular nevus and progressive enlargement of her right extremities and trunk since birth. the patient was treated with...

background:the present study aims to present a new method to trace narcotics in the solution extracted from dried urine stain left on cotton fabric. material and methods:narcotic substance was traced in the 50 samples through two methods. in the first method, samples were directly examined through thin layer chromatography (tlc). in the second method, a piece of cotton fabric was soaked in a be...

background: ct scan and nuclear medicine exams deliver a great part of medical exposures. this study examined professional radiation hazards in ct scan and nuclear medicine workers.   methods : in a cross sectional study 30 occupationally exposed workers and 7 controls (all from personnel of a laboratory) were selected. physical dosimetry was performed for exposed workers. blood samples were ob...

Salton (J. Gen. Microbiol. 30:223, 1963) summarized the evidence which demonstrates that the gram-positive cell is able to retain the crystal violet after iodine treatment because of the characteristic nature of its cell wall. This evidence is highly convincing, yet it does not explain the experiments of Henry and Stacy (Proc. Roy. Soc. London Ser. B 133:391, 1946) or of Bartholomew and Umbreit...

INTRODUCTION Helicobacter pylori is an important pathogen in humans causing chronic gastritis & playing a major role in the development of peptic ulcers & gastric cancer [1]. The present study was undertaken to find out the presence of H.pylori in various gastroduodenal diseases & to evaluate the advantages of Loeffler’s methylene blue (LMB) stain for crushed biopsy smears. The study was conduc...

A new and convenient myelin stain is described. Paraformaldehyde fixed tissue is serially immersed in a nitroblue tetrazolium solution and then in a diaminobenzidine solution. The result is distinct blue staining of myelinated fiber tracts. This technique has advantages over presently used myelin stains.

PURPOSE To evaluate the efficacy and safety of two oscillating/rotating toothbrushes, (Braun Oral-B Plaque Remover-D7 and Braun Oral-B Ultra Plaque Remover-D9) and a manual toothbrush with respect to removing extrinsic dental stain. MATERIALS AND METHODS This randomized, three-way cross-over study investigated 24 subjects entering the trial, which was divided into three, 5-day periods. Over t...

Staining is an auxiliary technique used in microscopy to enhance contrast in the microscopic image. Stains and dyes are frequently used in biology and medicine to highlight structures in biological tissues for viewing, often with the aid of different microscopes [1]. Hematoxylin and eosin stain (H&E stain or HE stain), is the routine staining for skin biopsies. However, in some circumstances, d...