The VSD is often located in the antero-superior position between the two limbs of the trabecular septomarginalis. The defect is generally large and juxta-arterial, and a muscular rim along the ...

Specifically, the blue-green algae (or cyanobacteria) that emerged and proliferated about 2.4 billion years ago would have been able to produce more oxygen as a metabolic by-product because Earth's ...