Micronutrient deficiency Micronutrient deficiency Micronutrient deficiency or dietary deficiency is not enough of one or more of the micronutrients required for optimal plant or animal health. In humans and other animals they include both vitamin deficiencies and mineral deficiencies, whereas in plants the term refers to deficiencies of essential trace minerals. Micronutrient deficiencies affect more than two billion people of all ages in both developing and industrialized countries. They are the cause of some diseases, exacerbate others and are recognized as having an important impact on worldwide health. Important micronutrients include iodine, iron, zinc, calcium, selenium, fluorine, and vitamins A, B, B,
ZAP70 deficiency ZAP70 deficiency ZAP70 deficiency, or ZAP70 deficient SCID, is a rare autosomal recessive form of severe combined immunodeficiency (SCID) resulting in a lack of CD8+ T cells. People with this disease lack the capability to fight infections, and it is fatal if untreated. It is cause by a mutation in the ZAP70 gene. Children with this condition typically present with infections and skin rashes. Unlike many forms of SCID, absolute lymphocyte count is normal and thymus is present. ZAP70 deficiency SCID is caused by a mutation is the ZAP70 gene, which is involved in the development of T cells. It