Relationships within the Polygonaceae have been recently examined using rbcL sequences, with an emphasis on Polygonum and its segregates. Here we test these results with respect to Polygonum (sensu lato) with an expanded dataset, including additional species and gene regions. Specifically, we focus on inferring the relationships of Eupersicaria (Polygonum sect. Persicaria in many prior treatmen...

Background and purpose: Cardiopulmonary disorders coexist and contribute to the morbidity and mortality of Chronic Obstructive Pulmonary Disease (COPD). There is also a significant contribution of COPD to heart disease. Hypoxemia and respiratory acidosis have been implicated as a major cause of cardiac arrhythmias in patients with COPD through an increase in catecholamines, fluid retention and ...