Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structural characterization of magnetoferritin   The physicochemical characterization of the magnetoferritin biomacromolecule
in terms of morphology, structural and magnetic properties shows that iron
oxides can be efficiently loaded into apoferritin molecules, preserving their
native biocompatible structure and affecting the morphology of the protein
shell.

11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin