Stingless bees collect plant resins and make it into propolis, although they have a wider range of use for this material than do honey bees (Apis spp.). Plebeia spp. workers employ propolis mixed with wax (cerumen) for constructing and sealing nest structures, while they use viscous (sticky) propolis for defense by applying it onto their enemies. Isolated viscous propolis deposits are permanent...

introduction: tympanoplasty is the standard and well established procedure for closure of tympanic membrane perforations .this paper compares the results of tympanoplasty in terms of hearing improvement and graft incorporation in patients with chronic perforation of the tympanic membrane between two groups with and without active drainage at the time of surgery.  materials and methods: sixty re...

introduction: nodular fasciitis is described as a benign reactive proliferation of myofibroblasts. due to its rapid-growing nature, a precise clinical diagnosis is difficult and the condition is frequently misdiagnosed as malignant lesions.   case report: in this study, we present the case of a young woman with an auricular nodular fasciitis as an example of one of the rarest sites of this tumo...

OBJECTIVES The earwax (cerumen) that covers external auditory canal (EAC) skin contains a mixture of ceruminous and sebaceous gland substances, such as lipids, peptides, and proteins. The components secreted from the ceruminous gland that is a modified sweat gland form cerumen and contain several antimicrobial factors. Since substance P (SP) and calcitonin gene-related peptide (CGRP), known as ...

0003-3472 2010 The Association for the Study of A doi:10.1016/j.anbehav.2010.11.020 Social insects use cuticular lipids for nestmate recognition. These lipids are chiefly hydrocarbons that can be endogenously produced or acquired from the environment. Although these compounds are already described as coming from different sources for different groups of social insects, nothing is known about th...

The lipid fraction occupying about 20 to 30 per cent of the ceruminal volume was extracted by the fractionation method previously reported. The lipid fraction from the dry and wet types of cerumen collected from the Japanese children was further separated into several kinds of lipid component by silicic acid column chromatography. Identification of the respective lipid components was performed ...

In the past, the human earcanal has primarily been thought of as a passive conduit for sound. Several studies, reported here, explored evidence of how active the earcanal is. The "active earcanal" is conceptualized and aspects of it are viewed through three timeframes: jaw-induced canal change in seconds/minutes, cerumen production in weeks/months, and aging in years. The influence of each of t...