Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Contact enhancement of locomotion in spreading cell colonies   The dispersal of cells from an initially constrained location is a crucial
aspect of many physiological phenomena ranging from morphogenesis to tumour
spreading. In such processes, the way cell-cell interactions impact the motion
of single cells, and in turn the collective dynamics, remains unclear. Here,
the spreading of micro-patterned colonies of non-cohesive cells is fully
characterized from the complete set of individual trajectories. It shows that
contact interactions, chemically mediated interactions and cell proliferation
each dominates the dispersal process on different time scales. From data
analysis and simulation of an active particle model, we demonstrate that
contact interactions act to speed up the early population spreading by
promoting individual cells to a state of higher persistence, which constitutes
an as-yet unreported contact enhancement of locomotion. Our findings suggest
that the current modeling paradigm of memoryless interacting active particles
may need to be extended to account for the possibility of internal states and
history-dependent behaviour of motile cells.

24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg