Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural correlations and melting of B-DNA fibres   Despite numerous attempts, the understanding of the thermal denaturation of
DNA is still a challenge due to the lack of structural data at the transition
since standard experimental approaches to DNA melting are made in solution and
do not provide spatial information. We report a measurement using neutron
scattering from oriented DNA fibres to determine the size of the regions that
stay in the double-helix conformation as the melting temperature is approached
from below. A Bragg peak from the B-form of DNA has been observed as a function
of temperature and its width and integrated intensity have bean measured. These
results, complemented by a differential calorimetry study of the melting of B
DNA fibres as well as electrophoresis and optical observation data, are
analysed in terms of a one-dimensional mesoscopic model of DNA.

28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol