background: testis tissue xenografting and the resultant sperm in a xenograft may provide a unique approach to rescue the genetic material of males that die prematurely and is a model for the study of human spermatogenesis and can represent an alternative approach for fertility preservation in cancer patients. this study was aimed to evaluate the xenogenic dog sperm in formation of male pronucl...

We introduce a data model for semi-structured data and explore a spatial logic for reasoning about this model. This note is part of an on-going project to develop a pattern-matching language for analysing and manipulating semi-structured data. This work was first reported in Appsem 2001 and the session on spatial logic at MFPS 2002.

Identification of a Mutation in COL4A5 Causative for X-linked Alport Syndrome in the Domestic Dog and Analysis of Gene Expression in the Kidneys of Affected and Nonaffected Siblings. (December 2003) Melissa Luanne Cox, B.Sc., Dalhousie University Chair of Advisory Committee: Dr. Keith E. Murphy The domestic dog, Canis lupus familiaris, plays many roles in the lives of humans. Additionally, the ...

Conventional Difference of Gaussians (DoG) filter is usually used to model the early stage of visual processing. However, the convolution operation used with DoG does not explicitly account for the effects of disinhibition. Because of this, complex brightness contrast illusions such as the White effect cannot be explained using DoG filters. We discovered that a new model explicitly accounting f...

—The subject of prairie dog (Cynomys ludovicianus) overpopulation is complex, and judgements of overpopulation may not be based on prairie dog population size or density. Caughley's (1981) model of animal overpopulation is applied here to prairie dogs to clarify the basis for a judgement of overpopulation in each of several cases. There are ecological components to all such cases, but a purely ...

Some populations of western burrowing owls (Athene cunicularia hypugaea) have declined in recent decades. To design and implement effective recovery efforts, we need a better understanding of how distribution and demographic traits are influenced by habitat quality. To this end, we measured spatial patterns of burrowing owl breeding habitat selection within black-tailed prairie dog (Cynomys lud...

INTRODUCTION A teaching model was sought to improve canine otoscopy skill and reduce use of teaching dogs. METHODS An otoscopy teaching model was printed in a flexible medium on a desktop three-dimensional printer from a magnetic resonance image of a canine external ear canal. The model was mounted in a polyvinyl dog mannequin. Validation of the teaching model was sought from student, faculty...

BACKGROUND For over a century, the dog model has been used widely in research studying cardiovascular physiology pertinent to humans. It has been specially applied, over the past 2 decades, in research on the pathophysiology and treatment of left ventricular (LV) remodeling and heart failure. METHODS AND RESULTS Because progressive LV remodeling and the march to heart failure are major proble...