Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrasensitive quantification of dextran sulfate by a mix-and-read
  fluorescent probe assay   Dextran sulfate is semi-synthetic, polydisperse sulfated polysaccharide with
important applications in clinical practice, in the manufacturing of plasma
derived protein therapeutics and in biomedical research. The sensitive
detection of dextran sulfate is relevant to preclinical and clinical drug
development projects, the quality control of pharmaceutic formulations, and the
process control in plasma fractionation using dextran sulfate modified
chromatographic columns. Most analytical methods for the sensitive detection of
dextran sulfate require multistep protcols and have not been transferred into
commercial formats. We describe here the direct quantification of dextran
sulfate using the commercially available molecular probe Heparin Red, by a
simple mix-and-read fluorescence assay. With a sensitive benchtop fluorimeter,
a quantification limit of 310 picogram per mL dextran sulfate is achieved. This
is superior by at least one order of magnitude to the quantification or
detection limit of other reported methods. The outstanding simplicity and
sensitivity establish Heparin Red as a new analytical tool for the
determination of dextran sulfate.

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The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol