0 10 20 30
10
−2
10
0
10
2
10
4
10
6
t
IFN (pg/ml), virus (pfu/ml) & pDC (fraction)
WT
0 10 20 30
10
0
10
5
t
IFNαR
−/−
IFN
α
IFN
α
MHV
MHV
Live pDC
Live pDC
Infected
pDC
Infected
pDC
0 10 20 30
10
0
10
2
10
4
10
6
IFN (pg/ml), virus (pfu/ml) & pDC (cell/ml)
I
V
C
V
C
0 10 20 30
10
0
10
2
10
4
10
6
t
y(t; p) p
y(t; p + δp) = y(t; p) + S(t, p)δp + O(kδpk
2
).
S(t) ≡ S(t, p) M × L
i s
i
(t; p) =
∂y
i
(t, p)
∂p
1
,
∂y
i
(t; p)
∂p
2
, . . . ,
∂y
i
(t; p)
∂p
L
∂
∂p
T
S(t; p)