This depends on your personal situation, how low your vitamin B12 levels are intracellularly, what kind of medical conditions you have, and how much improvement you get from the B12 shots
Historically, HLA-DRB1 alleles have been the primary focus for the evaluation of immunity, disease, and immunogenicity given its ubiquitous presence in all APCs and high level of expression relative to the other HLA class II loci 5,6
Recent studies also shed light on its critical involvement in maintaining the equilibrium among distinct T cell subpopulations
Mitochondrial ROS and lipid peroxidation increase under chronic stress without immediate cell death
Hong F, Cao Y, Wangb H (2008) Research on the effects of fluoride on child intellectual development under different environmental conditions