Learn More
The goal of this study was to document if lakes in National Parks in Washington have exceeded critical levels of nitrogen (N) deposition, as observed in other Western States. We measured atmospheric N deposition, lake water quality, and sediment diatoms at our study lakes. Water chemistry showed that our study lakes were ultra-oligotrophic with ammonia and(More)
A sensitive and reproducible method has been developed for separation of the major serum lipoproteins from 1 ml or less of human serum by isopycnic density gradient ultracentrifugation. The serum, applied to a step gradient (total volume 12.8 ml), was spun for 48 hr at 38,000 rpm at 10 degrees C and, in each of the fractions, apolipoproteins B and A-I were(More)
Immunophenotypic analysis of hematologic specimens is a useful laboratory adjunct to surgical pathology and cytology to confirm or further characterize diagnoses of leukemia or lymphoma. Laser scanning cytometry is a new laboratory technology that has been adapted to perform immunophenotypic analysis of hematologic specimens, with numerous advantages as(More)
Laser scanning cytometry is a new laboratory technology similar to flow cytometry but with advantages for certain clinical and research applications. To date, laser scanning cytometry has been successfully used to perform three-color immunophenotypic analysis of hematologic specimens, single-color immunophenotyping plus DNA content analysis of numerous(More)
Various brain disorders like anencephaly and spina bifida may be diagnosed early in pregnancy by measurement of alpha-fetoprotein in the amniotic fluid of patients with increased risk of bearing children with neural tube defects (1, 2). However, over 90% of the children with neural tube defects are born to mothers with no previous history of being at risk.(More)
OBJECTIVE The objective of this study was to test a new laboratory technology, laser scanning cytometry, for the purpose of performing multiparameter DNA content analysis of breast carcinomas. DESIGN We developed a simplified method of multiparameter DNA content analysis using cytokeratin expression to positively gate epithelial cells. Over 300(More)
The apoprotein of human serum low density lipoproteins was reduced and carboxymethylated and then cleaved by cyanogen bromide (CNBr). The peptides which were produced from this cleavage (90% yield, based upon loss of methionine) were resolved by SDS polyacrylamide gel electrophoresis into 10 major bands, each having an amino acid composition very similar to(More)
  • 1