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Biomedical subjects

B G Morris

Publications and source records attributed to B G Morris.

6 recordsLinked to original sources
PubMed1994

Restriction fragment length polymorphism (RFLP) of exon 2 of the MhcBibi-DRB3 gene in American bison (Bison bison).

Polymerase chain reaction (PCR) primers specific to exon 2 of the bovine lymphocyte antigen (BoLA)-DRB3 gene were successfully used to amplify the equivalent region in 469 American bison (Bison bison). In domestic cattle, alleles of DRB3 are assigned through a restriction fragment length polymorphism (RFLP) analysis of the patterns of fragment lengths observed after digestion with the restriction enzymes RsaI, BstYI and HaeIII. In bison, using the same procedure, the observed RFLP patterns provided evidence for the strong conservation of restriction sites previously reported in cattle.

Alleles↗
PubMed1980

Quality-control plan for intravenous admixture programs. I: Visual inspection of solutions and environmental testing.

Two components of a model quality-control plan for intravenous admixture services--a 100% visual inspection and an environmental testing program--were developed and evaluated in two hospitals. Visual inspections are recorded by technicians on two forms that detail the types of solution, container, and device defects that should be checked. One form covers stock solutions and supplies, and the other covers prepared solutions. The environmental testing program uses two forms to record performance and results of routine microbial monitoring. The detailed quality-control forms are presented. Procedures for handling defective items and contamination problems are discussed. Evaluation of the visual and environmental plans showed they provided a systematic, workable, and modest-cost method of assuring and documenting conditions in an i.v. admixture service. To assure competent preparation, use and distribution of high-quality i.v. solutions, both components of the quality-control system must be performed on a routine basis.

Drug Combinations↗
PubMed1980

Qaulity-control plan for intravenous admixture programs. II: Validation of operator technique.

A plan for the validation of aseptic-operator technique in i.v. admixture programs and two test methods for evaluating the plan are proposed. After a new operator has been trained, the plan involves qualification of the operator through the preparation of statistically valid samples, to be followed by the random selection of samples for in-process monitoring. To test the plan, trypticase soy broth transfers were used in one hospital and Addi-Chek (Millipore Corp.) filtrations were used in another. The participants, all trained operators, initially prepared 40 test samples as a validation step. The finding of no microbial growth in these test samples permitted continuation into the monitoring phase, during which test samples were prepared randomly, one test sample out of every 25 i.v. admixtures prepared for patient use. All samples were negative for microbial growth, indicating that the operators maintained aseptic technique. These findings give evidence that the proposed testing plan is valid. The authors propose the plan as a phase of a quality control program, based on valid statistical principles, to give assurance that i.v. room operators are qualified to prepare sterile parenteral medications.

Drug Combinations↗
PubMed1979

Subtypic linearity in the bovine B blood group system.

The technique of proteolytic digestion employing the enzymes trypsin, chymotrypsin, and protease was used to investigate the physical order of subtypic determinants occurring on bovine erythrocytes. In the B system subgroup Y1, Y2, the determinants behaved as if linearly arranged in the same order as predicted from their serological behavior; furthermore, the differences between the two subtypes appeared to be quantitative rather than qualitative. In the E'1, E'2, E'3 subgroup, however, the subtypic determinants did not appear to be physically linear, although they are serologically linear.

Animals↗