Ryland P . Byrd

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Electrophysiological experiments indicate that olfactory receptors of the channel catfish, Ictalurus punctatus, contain different receptor sites for the acidic (A), basic (B), and neutral amino acids; further, at least two partially interacting neutral sites exist, one for the hydrophilic neutral amino acids containing short side chains (SCN), and the(More)
Sinus histiocytosis with massive lymphadenopathy (SHML) is generally regarded as a benign, self-limited, pseudolymphomatous process requiring little or no therapy. We studied a 13-year-old black boy with a ten-year clinical course of SHML that had varying, intermittent sites of extranodal involvement, including bone, submandibular gland, trachea, eye, and(More)
Extrapulmonary manifestations of Mycobacterium tuberculosis (MTB) in general, and tuberculous peritonitis (TBP) in particular, have posed complex diagnostic challenges for centuries. Peritoneal tuberculosis is a very rare manifestation of MTB with subtle clinical findings that may result in a significant diagnostic delay, often of more than four months. As(More)
Pneumomediastinum (PM) is an uncommon condition characterized by the presence of air in the mediastinum. It is associated with alveolar rupture that allows air to traverse along the bronchovascular bundle into the mediastinum. A review of the world medical literature identified 50 additional cases of PM and pneumopericardium (PC) associated with diabetic(More)
Despite the evolution of modern antibiotics, pleural space infection remains a common illness with significant morbidity and mortality. Every year up to 60 percent of the 1.2 million patients in the United States who present with community-acquired pneumonia develop parapneumonic pleural effusions. Few of these parapneumonic effusions progress to an(More)
Solitary extramedullary plasmacytomas are uncommon neoplasms. They occur most frequently in the upper aerodigestive tract and account for 4% of the nonepithelial tumors in this site. The evolution of a plasmacytoma is unsteady and symptoms at presentation have included dystonia, dysphagia, oral pain, cough, and dyspnea on exertion. Plasmacytoma of the upper(More)