Immediate receptor binding (seconds to minutes), intracellular signaling cascade propagation (minutes to hours), gene expression changes (hours to days), protein synthesis and accumulation (days to weeks), cellular and tissue-level effects (weeks to months)
In terms of endometrial repair, thin endometrium and chronic endometritis are important factors leading to embryo implantation failure
He added that B12 deficiency "can be undiagnosed or underdiagnosed since symptoms can be nonspecific," like cognitive slowing, fatigue, tongue swelling, arm or leg tingling, and difficulty walking
An amino acids structure consists of a central carbon atom attached to a hydrogen, an acidic carboxyl group (COOH), an amino group (NH2) and an organic side chain (also called an R group)
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