|
Theiler Stage |
days postcoitus (dpc) |
Development |
|
1 |
1 |
1 Cell |
|
2 |
1 |
Beginning of cell division |
|
3 |
2 |
Morula |
|
4 |
3 |
Advanced division/segmentation |
|
5 |
4 |
Blastocyst |
|
6 |
4.5 |
implantation |
|
7 |
5 |
Formation of egg cylinder |
|
8 |
6 |
Differentiation of egg cyliner |
|
9 |
6.5 |
Advanced endometrial reaction; prestreak |
|
10 |
7 |
Amnion, midstreak |
|
11 |
7.5 |
Neural plate, presomite stage; no allantoic bud |
|
12 |
8 |
First somites, late head fold |
|
13 |
8.5 |
Turning |
|
14 |
9 |
Formation and closure anterior neuropore |
|
15 |
9.5 |
Formation of posterior neuropore, forelimb bud |
|
16 |
10 |
Closure post. neuropore, hindlimb and tail bud) |
|
17 |
10.5 |
Deep lens indentation |
|
18 |
11 |
Closure lends indentation |
|
19 |
11.5 |
Complete separation of lens vesicle |
|
20 |
12 |
Earliest sign of fingers |
|
21 |
13 |
Anterior footplate indented, marked pinna |
|
22 |
14 |
Fingers separate distally |
|
23 |
15 |
Toes separate |
|
24 |
16 |
Reposition of umbilical hernia |
|
25 |
17 |
Fingers and toes joined together |
|
26 |
18 |
Long Whiskers |
|
27 |
19 |
Newborn mouse |
|
28 |
19- |
Postnatal development |
|
days postpartum (dpp) |
|
|
1-16 |
eyelids remain sealed and external ear ducts plugged with periderm |
|
17- |
Periderm seals of ears and eyelids vanish; active feeding begins within next 3 days and weaning after 1 week |
|
25- |
Entering productive age, sexually mature at 6 weeks for famles and 8 weeks for males. |
|
1 year |
Fertility decrease |
