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We prove that the spaces of unrooted phylogenetic trees are Hamiltonian for two popular search metrics: Subtree Prune and Regraft (SPR) and Tree Bisection and Reconnection (TBR). Further, we make progress on two conjectures of Bryant on searching phylogenetic treespace: treespace under the Nearest Neighbor Interchange (NNI) metric has a 2-walk, and there(More)
Canadians suffer from some form of dementia; Alzheimer's disease (AD) is one such form. AD is a neurodegenerative disease characterized by significant neuronal death. Neuro-nal death has been associated with two pathophysiological features: 1) neurofibrillary tangles within the neurons, and 2) amyloid beta plaque formation between neurons. Excessive(More)
Long thoracic nerve palsy has been reported to have traumatic, iatrogenic, and idiopathic causes. The authors describe the case of a 62-year-old man who presented with progressively worsening right shoulder pain, winging of the scapula, and Horner syndrome. A chest CT scan revealed an apical pulmonary mass. To the authors' knowledge, this is the first(More)
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