Before we get into the common reasons for these side effects or triggers from B12, let's look at the
TbpA and TbpB show considerable variation, particularly TbpB, whose molecular mass ranges from 68 to 85 kDa in different meningococcal isolates (Perkins-Balding et al., 2004)
Among these, LDL-C is a major contributor to cholesterol deposition within arterial walls and the development of atherosclerosis [40], whereas HDL-C plays a crucial role in reverse cholesterol transport, helping to reduce cardiovascular risk [41]
They express active tyrosinase and dihydroxyphenylalanine (DOPA) and are considered part of the hair follicle pigmentary unit, along with keratinocytes.6 Melanogenesis occurs within specialized lysosomes called melanosomes, which are transferred to keratinocytes via dendrites and filopodia
Kawada, 2017
The presence of sulfur makes the amide H acidic due to resonance