نتایج جستجو برای: core 174
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Nanopore sequencing of DNA is a single-molecule technique that may achieve long reads, low cost, and high speed with minimal sample preparation and instrumentation. Here, we build on recent progress with respect to nanopore resolution and DNA control to interpret the procession of ion current levels observed during the translocation of DNA through the pore MspA. As approximately four nucleotide...
Many laboratories involved in drug-abuse screening use enzymoimmunoassays such as Syva’s EMIT#{174} system. Although automation has been extensively used to reduce assay costs, further reductions can be achieved by the development of in-house reagents. We have developed our own reagents for the detection of opiates in urine by using the Syva EMIT principle and adapted it for use on an Eppendorf...
Prostate-specific antigen (PSA) is a recently described marker for prostate carcinoma (1). In patients with prostatic cancer the concentration of PSA in serum can be as much as 10 mg/L, whereas concentrations in healthy men are <2.8 zg/L (2). Hybritech’s immunoradiometric assay for PSA has been in routine use in our laboratory for 15 months. Its reproducibility is generally good, but two sample...
9 Introduction to Number Theory 168 9.1 Subgroups of the Integers . . . . . . . . . . . . . . . . . . . . 168 9.2 Greatest Common Divisors . . . . . . . . . . . . . . . . . . . . 168 9.3 The Euclidean Algorithm . . . . . . . . . . . . . . . . . . . . . 169 9.4 Prime Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . 172 9.5 The Fundamental Theorem of Arithmetic . . . . . . . . . . . . ...
Infection of plants or protoplasts with turnip crinkle virus (TCV) results in the synthesis of the genomic RNA and two subgenomic (sg) RNAs of 1.7 kb and 1.45 kb, respectively. Both of the sgRNA promoters were characterized previously and their secondary structures predicted by computer analysis [J. Wang and A. E. Simon (1997). Virology 232, 174-186]. Secondary structure-sensitive chemical and ...
Within 5 to 10 min at 37 C, bacteria infected by bacteriophage OX174 acquire the ability to exclude superinfecting OX particles from reproducing themselves. The superinfecting phage are blocked at a stage prior to synthesis of the parental replicative form molecule; the superinfecting deoxyribonucleic acid remains as intact (infective) single strands. Establishment of superinfection exclusion a...
© Informal Logic Vol. 26, No. 2 (2006): pp. 149-174.
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