Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of a viral infection model with state-dependent delay, CTL and
  antibody immune responses   A virus dynamics model with intracellular state-dependent delay and nonlinear
infection rate of Beddington-DeAngelis functional response is studied. The
technique of Lyapunov functionals is used to analyze stability of an interior
infection equilibrium which describes the case of both CTL and antibody immune
responses activated. We consider first a particular biologically motivated
class of discrete state-dependent delays. Next, the general case is
investigated.

6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc