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QUESTION
Q86) Pellagra is caused due to the deficiency of ...[AFMC 2009 ]

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Pellagra is a disease characterised by diarrhoea, dermatitis and dementia. If left untreated, death is the usual outcome. It occurs as a result of niacin (vitamin B-3) deficiency. Niacin is required for most cellular processes.
Answer : (b)