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At least 397 records · Page 22Linked to original sources
PubMed1993

Recommendations of the International Council for Standardization in Haematology for Ethylenediaminetetraacetic Acid Anticoagulation of Blood for Blood Cell Counting and Sizing. International Council for Standardization in Haematology: Expert Panel on Cytometry.

Of the three ethylenediaminetetraacetic acid (EDTA) salts used for anticoagulation of blood specimens for hematologic testing, potassium salts are the most readily soluble. Tripotassium EDTA is dispensed as a liquid and thus causes a slight dilution of the specimen. This salt also has been shown to affect the red blood cell size more at increased concentrations and on storage than the dipotassium salt. Therefore, dipotassium EDTA is recommended as the anticoagulant of choice in specimen collection for blood cell counting and sizing. The amount of dipotassium EDTA used is 1.5-2.2 mg (3.7-5.4 mumol) per milliliter of blood.

Anticoagulants↗
PubMed1993

BCSH-NIBSC anti-D reference reagent for antiglobulin tests: the in-house assessment of red cell washing centrifuges and of operator variability in the detection of weak, macroscopic agglutination. British Committee for Standards in Haematology. National Institute for Biological Standards and Control.

A batch of an anti-D preparation, reference 91/608, has been prepared for the preparation of red cells weakly sensitized with IgG that can reveal inhibition of the antiglobulin test by one volume of human serum, diluted 1:1000. The preparation provides an objective assessment of red cell washer efficacy and the confidential, in-house assessment of operator variability in detecting weak but definite macroscopic agglutination by blind, replicate tests. Red cell washer efficacy and poor operator reading procedures causing disruption of weak agglutination are two major causes of false-negative antiglobulin tests; neither are adequately detected by the common quality-control procedure of adding strongly IgG-sensitized red cells ('Coombs control cells') to apparently negative antiglobulin tests. However, weakly IgG-sensitized red cells do offer a valuable control function that can detect some degree of cell washer inefficiency and reading errors although such cells are not a substitute for the more sensitive replicate testing. Test protocols are provided to assess the efficacy of cell washing machines and operator skills in the detection of weak but definite macroscopic agglutination.

Artifacts↗
PubMed1999

Standard G-, Q-, and R-banded ideograms of the domestic sheep (Ovis aries): homology with cattle (Bos taurus). Report of the committee for the standardization of the sheep karyotype.

Revised G-, Q- and R-banded karyotypes and ideograms for sheep chromosomes at the 420-band level of resolution are presented. The positions of landmark bands on the sheep chromosomes are defined by their distance relative to the centromere to facilitate comparison with equivalent cattle chromosomes. Chromosome-specific (reference) molecular markers that have been mapped to sheep chromosomes and their equivalent cattle chromosomes are proposed. Reference markers will facilitate genome comparisons between sheep and cattle and minimise confusion due to chromosome nomenclature. Numbering of the Robertsonian translocation chromosomes remains as previously reported.

Animals↗
PubMed1999

Standard G-, Q-, and R-banded ideograms of the domestic sheep (Ovis aries): homology with cattle (Bos taurus). Report of the committee for the standardization of the sheep karyotype.

Revised G-, Q- and R-banded karyotypes and ideograms for sheep chromosomes at the 420-band level of resolution are presented. The positions of landmark bands on the sheep chromosomes are defined by their distance relative to the centromere to facilitate comparison with equivalent cattle chromosomes. Chromosome-specific (reference) molecular markers that have been mapped to sheep chromosomes and their equivalent cattle chromosomes are proposed. Reference markers will facilitate genome comparisons between sheep and cattle and minimise confusion due to chromosome nomenclature. Numbering of the Robertsonian translocation chromosomes remains as previously reported.

Animals↗
PubMed2005

ACC/AHA key data elements and definitions for measuring the clinical management and outcomes of patients with chronic heart failure: a report of the American College of Cardiology/American Heart Association Task Force on Clinical Data Standards (Writing Committee to Develop Heart Failure Clinical Data Standards): developed in collaboration with the American College of Chest Physicians and the International Society for Heart and Lung Transplantation: endorsed by the Heart Failure Society of America.

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Chronic Disease↗