Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interchromatidal central ridge and transversal symmetry in early
  metaphasic human chromosome one   The topographic structure of Giemsa banded (G-banded) early metaphase human
chromosomes adsorbed on glass was analyzed by atomic force microscope using
amplitude modulation mode [AM-AFM]. Longitudinal height measurements for early
metaphasic human chromosomes showed a central ridge that was further
characterized by transversal height measurements. The heterochromatic regions
displayed a high level of transversal symmetry, while the euchromatic ones
presented several peaks across the transversal height measurements. We suggest
that this central ridge and symmetry patterns point out a transitional
arrangement of the early metaphase chromosome and support evidence for
interchromatidal interactions prior to disjunction.

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The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat