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Reproductive isolation is the heuristic basis of the biological species concept, but what is it? Westram et al. (this issue) propose that it is a measurable quantity, “barrier strength,” that prevents gene flow among populations. However, their attempt to make the concept of reproductive isolation more scientific is unlikely to satisfy the diverse opinions of all evolutionary biologists. There are...
Background
Lung transplantation is a therapeutic option for end‐stage pediatric pulmonary hypertension (PH). Right ventricular (RV) recovery post‐lung transplant in children with PH has not been well‐described, and questions persist about the peri‐operative course and post‐transplant cardiac function after lung transplantation in medically refractory PH patients with baseline RV dysfunction.
Methods...