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What are peptides
Reactive oxygen species (ROS) act like sparks in a dry forest, igniting a blaze of tissue damage
In methyl vitamin B12 deficiency, there is reduced production of S-Adenosylmethionine (SAM), and the activity fo the enzyme cystathionine beta synthase is reduced, thus leading to reduced transfer of the sulphur from methionine into the sulphation cycle, with a resultant lack of production of Glutathione
Tuy nhin do c a ca tng ngi l khc nhau nn khng phi ai cng gp tnh trng ny
This triggers the MAPK cascade, such that Ras-GTP activates Raf [also called MAPK kinase kinase (MAPKKK)], which in turn activates MEK1/2 [MAPK kinase (MAPKK)]
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