DENTAL LESIONS IN THE LOWLAND TAPIR (TAPIRUS TERRESTRIS).

Dental ailments, mandibular swelling, and dentoalveolar abscesses are common in tapirs, but knowledge about prevalence or etiology of these lesions in the Tapiridae family in general, and in lowland tapirs (Tapirus terrestris) in particular, is scarce. A recent study identified resorptive lesions of unknown etiology as a common problem in the Malayan tapir (Tapirus indicus). In order to investigate the type and prevalence of dental lesions occurring in lowland tapirs, and to compare these with findings with the Malayan tapir, skulls and teeth from 46 deceased lowland tapirs were visually and radiographically examined.

Gender differences in the anatomy of the perineal glands in Guinea pigs and the effect of castration.

Perineal glands in guinea pigs are part of the sebaceous glandular complex. Their secretions are used for scent marking. This is important for social status and can be seen in both sexes and castrated males.

Reaction of singlet oxygen with tryptophan in proteins: a pronounced effect of the local environment on the reaction rate.

Singlet molecular oxygen, O(2)(a(1)Δ(g)), can influence many processes pertinent to the function of biological systems, including events that result in cell death. Many of these processes involve a reaction between singlet oxygen and a given amino acid in a protein. As a result, the behavior of that protein can change, either because of a structural alteration and/or a direct modification of an active site.

Exonization of a LINE1 fragment implicated in X-linked hypohidrotic ectodermal dysplasia in cattle.

A case of X-linked hypohidrotic ectodermal dysplasia (XHED) was identified in a family of Danish Red Holstein cattle. The ectodysplasin-signalling protein (EDA) is known to be central in the normal development of ectodermal structures, and mutations in the ectodysplasin A (EDA) gene have been reported to cause XHED. In this study, we analysed different EDA transcript variants in affected and unaffected cattle and identified a new transcript variant including a LINE1-derived pseudoexon between EDA exons 1 and 2.