Normal vital signs (blood pressure, heart rate, respiratory rate, temperature) and body mass index (BMI) between 18 and 30 kg/m 2 Suboptimal vitamin B12 status (deficient to borderline 200300 pg/mL), defined as serum B12 levels within the lower end of the reference range (234894 pg/mL) Able to provide informed written consent Able to comply with study procedures and follow-up visits as outlined in the protocol 2.2.2 Exclusion criteria Known hypersensitivity or allergy to oral vitamin B12 supplements or any of its components Known history of cobalt allergy or sensitivity Severe malabsorption syndromes, including pernicious anemia or intestinal disorders affecting vitamin B12 absorption Current use of acetaminophen, nonsteroidal anti-inflammatory drugs, antibiotics, antacids, proton pump inhibitors (PPIs), multivitamins, or nutritional supplements containing vitamin B12 History of gastric bypass surgery or other procedures that significantly alter GI anatomy or function Significant renal impairment (estimated glomerular filtration rate [eGFR] 0.05) Supplementary Table 1
It is designed for use by qualified professionals conducting non-clinical studies, analytical testing, or experimental research
A single protein immunologically identified as CD38 displays NAD+ glycohydrolase, ADP-ribosyl cyclase and cyclic ADP-ribose hydrolase activities at the outer surface of human erythrocytes
A quick search on the internet revealed clinics offering private treatments for people who have not necessarily been diagnosed as being vitamin B12 deficient: $30 for Five Week Wellness Package with Vitamin B6 and B12 Injections at Fit Medical Weight Loss ($150 Value) and a London based clinic offering Vita Boost injection injections of vitamins B12 in to the body, helping keep energy levels up as well as general well being
Data were evaluated using FlowJo software (BD), assessing CFSE positivity in mCherry and CD14-positive macrophages
