^ m d. In the document, Nursing: Scope and Standards of Practice, scope of practice is defined by the âwho,â âwhat,â âwhere,â âwhen,â âwhy,â and âhowâ of nursing practice, including advanced practice nursing. In addition, there are other documents relevant to specialties.
double helix. double helix. double helix. The coiled structure of double-stranded DNA in which strands linked by hydrogen bonds form a spiral configuration, with the two strands oriented in opposite directions.
James D. Watson; The Double Helix: A Personal Account of the Discovery of the Structure of DNA, Atheneum, 1980, ISBN 0-689-70602-2 (first published in 1968) is a very readable firsthand account of the research by Crick and Watson.