analyzing
anemia
b12
blood
bone
chemical
chemistry
coenzyme
cyanocobalamin
d
disease
epidemic
exam
experiment
health
healthy
hematology
hospital
illness
infection
lab
laboratory
malnutrition
medical
medicine
metabolism
mineral
nutrient
patient
pyridoxal
research
retinal
riboflavin
sample
science
scientific
scientific experiment
supplement
supplementary
test
test tube
tocopherol
tube
virus
vitamin
vitamin a
vitamin b12
vitamin d