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Microglia seem to play an important and dynamic role in BBB integrity in response to different insults

Cells were incubated for 10 min at 37C, then the C11-BODIPY mixture was removed and cells were washed in 1 ml of fresh HBSS

So if you're on a vegan or vegetarian diet where you're not eating foods from animals, you're at risk for B12 deficiency

As far as I know (I'm not medically trained or a scientist) overdosing B12 is unlikely as excess passes out in urine

Interestingly, their analysis demonstrated that different GS-like enzymes accepted various alternate nucleophiles, including d-serine, non-natural amino acids, and alpha-amino alcohols, to yield a range of glutathione variants, but did not produce either serine- or glutamate-substituted analogs

What is Leaky Gut Syndrome