I'm seriously behind in updating the blogroll, but there are two that I wanted to get up, one a change in address and one that I have mentioned before. Liberal Arts Mafia will soon disappear from the blogosphere but fortunately it's author, Sean Hurley, will not. His new site still will have his personal links on politics and the arts as well as his professional links — Neuroinflammation.net. I never realized what an energy sucker the brain is. Firing those synapses takes a lot power...

What is the blood-brain barrier?

Although, the human brain comprises only 2% of the entire body mass, it accounts for about 20% of the glucose and oxygen that is consumed. The blood supply to the brain is both physiologically and anatomically different from that to most of the rest of the body – its most notable feature being the blood-brain barrier (BBB). The BBB is formed by brain capillary endothelial cells.

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The other site is Ronni Bennett's excellent blog on aging — Time goes by. Go forth and learn from both.