Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.

[EX Q]: Abstract: Information on ethyl alcohol intoxication in children is scarce. A retrospective study was conducted by chart reviews of 27 patients with documented ethanol ingestion admitted to the Alberta Children's Hospital, Foothills Provincial Hospital, Calgary General Hospital or Holy Cross Hospital from 1969 to 1984. Six patients had hypoglycemia and one experienced a convulsion. The rate of alcohol elimination was found to be greater than 6.2 mM/L/hr (28.4 mg/dl/hr), approximately twice the rate seen in adults. Six patients had hypokalemia, and two had severe metabolic acidosis.
[EX A]: Adolescence

[EX Q]: Abstract: In the radial hemolysis test for rubella virus-specific antibodies, sera obtained shortly after primary rubella produce a characteristically altered hemolysis zone, termed soft hemolysis. The occurrence of soft hemolysis was analyzed statistically in 6,723 sera. The specificity of soft hemolysis for infection with rubella virus was 99.0%. Its sensitivity in primary infections was 97.3%, and the predictive value for rubella serodiagnosis (increase in IgG level or detectable IgM) was 91.2%. The temporal association of soft hemolysis with rubella was determined with sera obtained from 129 persons during late convalescence (70-310 days after onset of symptoms). Soft hemolysis disappeared by 190 days after the onset of symptoms and the presence of ordinary hemolysis ruled out primary rubella in the preceding 70-100 days. Soft hemolysis was caused by IgG antibody to rubella virus, and thus represents a new serodiagnostic principle. This technique, together with an Igm assay, allows rapid diagnosis of recent rubella from a single serum sample.
[EX A]: Antibodies, Viral

[EX Q]: Abstract: Localized regions of mineralization were found in confluent cultures of rabbit marrow fibroblastic cells. The mineralized tissue developed within clusters of giant fat cells in the spaces between the cells. Investigations with light and electron microscopy demonstrated that in these sites there was some differentiation of the fibroblastic cells in an osteogenic direction, shown by changes to more polygonal shapes, and the synthesis of well-banded collagen similar to that found in bone tissue. Differentiation may be due, in part, to increased cell density in a confined space. Growth of the mineralized tissue was observed in the living cultures with a fluorescence microscope. Electron probe microanalysis confirmed that the mineral formed was hydroxyapatite. Initiating sites of mineralization included membranous vesicular bodies, lipid, and products of cellular degeneration. Once initiated, mineralization appeared to spread rapidly into adjacent collagenous and other structures, suggesting the appearance of a mixture of skeletal-type and dystrophic mineralization.
[EX A]:
Animal