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Discusses the etiology of inborn errors of metabolism. Enzyme activity in tissues of patients with the condition; Genetic aspects of the condition; Analysis of the rate of enzyme synthesis in bacteria; Mechanisms to increase the quantity of enzyme in mammals.

Studies biochemical abnormalities in hereditary diseases. Interpretation of the subdivision of chromosomes which conveys a unit biochemical message; Technique of growing human cell lines in tissue culture; Analysis of the enzymatic contents of human cell lines; Overview of the cell theory.

The article provides information on the Advisory Committee on Heritable Disorders and Genetic Diseases in Newborns and Children (ACHDGDNC), its brief history and its accomplishments. ACHDGDNC is created to give advice and to guide the Secretary of Health and Human Services (HHS) on the appropriate application of universal screening technologies, policies and guidelines to reduce mortality and morbidity in newborns and children at risk of genetic disorders.