1·Pellagra is a disease that results from niacin deficiency.
糙皮病是一种由烟酸缺乏引起的疾病。
2·They also prevent certain diseases such as rickets and pellagra.
它们还防止某些疾病，如佝偻病和糙皮病。
3·Other doctors looked for foods to cure the diseases rickets and pellagra.
其他的医生在寻找治疗佝偻病和糙皮病的食物。
4·Members of the first group developed pellagra.
第一组的成员开发的糙皮病。
5·A secondary action of this drug is to cause pellagra.
这个药的一个副作用是会引起糙皮病。