Black tooth stain is a characteristic extrinsic discoloration commonly seen on the cervical enamel following the contour of the gingiva. To investigate the relationship between black tooth stain and the oral microbiota, we used 16S rRNA gene sequencing to compare the microbial composition of dental plaque and saliva among caries-free children with and without black stain. Dental plaque and sali...

Histopathology diagnosis is based on visual examination of the morphology of histological sections under a microscope. With the increasing popularity of digital slide scanners, decision support systems based on the analysis of digital pathology images are in high demand. However, computerised decision support systems are fraught with problems that stem from colour variations in tissue appearanc...

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...

Phenolic compounds were isolated from Elettaria cardamomum seeds by using organic and inorganic solvents. The chemical and physical properties of phenols were studied such as qualitative analysis, thin layer chromatography (TLC), functional groups test and infra-red spectroscopy. TLC results indicated presence of three compounds, two of them were flavonoids and the other was tanninic compound b...

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...

A survey of the literature is presented regarding the simulation of port wine stain (PWS) skin color. Knowledge of PWS features, such as the depths and diameters of affected vessels, is essential for informing laser treatment. These may be determined through the inverse application of a skin model. The techniques which have been applied to achieve this are analyzed in detail. Radiative transfer...

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...