Immunity 9 , 277287 (1998)
Also, since you need stomach acid to absorb B12, long-term use of acid-suppressing proton pump inhibitors (such as Nexium, etc.) can lead to B12 deficiency, as can chronic intestinal conditions such as Crohns disease, celiac disease, and intestinal parasites
In addition to the quantification of R6G, we made efforts to determine the concentration of dopamine and ibuprofen from the samples of the permeability experiments by liquid chromatography-tandem mass spectrometry
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Hertz-Picciotto, I
Motoi et al., 2019