Instruct: Identify the main category of Biorxiv papers based on the titles
Query: A three-photon head-mounted microscope for imaging all layers of visual cortex in freely moving mice.
13
The categories of this paper are: animal
9
The categories of this paper are: synthetic
21
The categories of this paper are: toxicology
3
The categories of this paper are: evolutionary
7
The categories of this paper are: ecology
22
The categories of this paper are: physiology
29
The categories of this paper are: education
8
The categories of this paper are: genomics
2
The categories of this paper are: biology
24
The categories of this paper are: cancer
0
The categories of this paper are: genetics
16
The categories of this paper are: microbiology
25
The categories of this paper are: bioengineering
5
The categories of this paper are: cell
15
The categories of this paper are: developmental
17
The categories of this paper are: molecular