Relationship between vitamin D and sunrays
Illustrate the relationship between vitamin D and sunrays?
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Vitamin D or calciferol is synthesized in the skin by the action of ultraviolet range of sunrays on precursor molecules. Afterward it is converted into its active form in the liver and kidneys.
Streptococcus pneumoniae exist in 84 known antigenic types. Each type differs from the others in the structure of its polysaccharide capsule known as serotypes. Therefore, from the point of view of the adaptive immune system, each and every serotype o
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