The changes in metabolic activity associated with endothermy and the change from gill to lung respiration has led to changes in vertebrate circulatory systems. Veins between two capillary networks are ...

That means that the vans are very busy indeed, all the time. So it's a good job we've got the circulatory system to transport nutrients, water and oxygen to the entire body. Inside you ...

Aminoacyl tRNA synthetases picked up new protein domains that participate in vasculature formation around the same time that organisms evolved key adaptations in the circulatory system. Amber Dance is ...

Fish have a circulatory systems with just one circuit. Their hearts pump oxygen poor blood to their gills, where oxygen is absorbed from the water. The blood then flows around the fish's body and ...

This first World Sustainable Transport Day reminds us that the road to a better future depends on cleaner and greener transportation systems. Transportation represents the world’s circulatory ...

We thank our colleagues for their interest in our Article.1 We agree with Zaoqu Liu and colleagues that in addition to mortality assessment, quality of life and long-term functional outcomes are ...

Long COVID is the chronic manifestation of lasting symptoms of SARS-CoV-2 infection that can last for at least 3 months, with shortness of breath and system inefficiency often remaining central issues ...