BACKGROUND/AIMS The ultraviolet (UV) portion of sunlight is involved in the induction and development of skin cancers against which a limited photoprotection may be provided by reduced time of exposure, clothing, and sunscreen applications. The concept of an effective, safe, systemic photoprotection will circumvent many of the shortcomings. The UV-induced oxidative stress is a cause of DNA dama...

BACKGROUND Minocycline-induced pigmentation of bone (black bone) is well described in tooth-bearing intra-oral bone, but is less known in periarticular bone in patients who have undergone total joint arthroplasty. On a retrospective basis, we investigated the short-term clinico-radiological results of total joint arthroplasties in which the patient developed minocycline-induced periarticular bl...

superficial dermis with occasional melanophages (Figure 3). The patient continued to receive cycles of chemotherapy, with no observed increase in pigmentation, until completing the treatment after 11 infusions. Five months after the last cycle of chemotherapy and 8 months after the appearance of the hyperpigmentation, no pigmentation was seen on the palms of the hands, and the reticular pigment...

Introduction: Addison's disease is a rare endocrinal disorder, with several oral and systemic manifestations. A variety of pathological processes may cause Addison's disease. Classically, hyperpigmentation is associated with the disease, and intraoral pigmentation is perceived as the initial sign and develops earlier than the dermatological pigmentation. The symptoms of the disease usually prog...

— Environment-dependent variation in the morphological, physiological or behavioural expression of a genotype is termed phenotypic plasticity. Twelve colonies of both Diploastrea speciosa and Diploastrea heliopora, two common Indo-Pacific massive corals, were tested for plastic responses by transplanting palm-sized fragments (clonemates) over six stations (three reefs  two depths) in Singapore...

This study focuses on a particular attribute of trumpet tones, the brightness, and on the physical characteristics of the instrument thought to govern its magnitude. On the one hand, an objective study was carried out with input impedance measurements, and, on the other hand, a subjective study with hearing tests and a panel of subjects. To create a set of different trumpets a variable depth mo...

BACKGROUND The study of social categorization has largely been confined to examining groups distinguished by perceptually obvious cues. Yet many ecologically important group distinctions are less clear, permitting insights into the general processes involved in person perception. Although religious group membership is thought to be perceptually ambiguous, folk beliefs suggest that Mormons and n...

This study examined news readers’ memories of race-related facial features of an individual pictured in the news. Participants were presented with a series of news stories, including one of four different versions of the news story of interest: nonstereotyped, stereotyped/noncrime, nonviolent crime, violent crime. Each of the four versions contained a photograph of an individual who was the foc...

Pigmented lesions are frequently found in the oral cavity. Their overlapping clinical features should prompt the physician to carefully evaluate the patient’s medical history for a differential diagnosis. Oral pigmentations may represent physiological changes or be a manifestation of more serious diseases. Here, we describe a patient who was affected by brown maculae involving the perioral regi...