Virtual Embryo Atlas
Developmental timeline
TS1 (fertilized egg) → P56 (adult) · click a stage to load samples
TS1
E0.5
1-cell
TS2
E1
2-cell
TS3
E2
4-16 cell
TS4
E3
morula → blastocyst
TS5
E4
late blastocyst
TS6
E4.5
attaching blastocyst
TS7
E5
egg cylinder
TS8
E6
prestreak
TS9
E6.5
streak
TS10
E7
amnion
TS11
E7.5
neural plate
TS12
E8
neural folds
TS13
E8.5
5-8 somites
TS14
E9
9-12 somites
TS15
E9.5
13-20 somites
TS16
E10
forelimb buds
TS17
E10.5
hindlimb buds
TS18
E11
handplate
TS19
E11.5
hindlimb handplate
TS20
E12
digital rays
TS21
E13.5
finger separation
TS22
E14
eyelid formation
TS23
E15
eyelids closing
TS24
E15.5
ear pinna
TS25
E16.5
long whiskers
TS26
E17.5
body hair
TS27
E18.5
pre-birth
P7
P7
postnatal day 7
P56
P56
adult (8 weeks)
E0
E2
E4
E6
E8
E10
E12
E14
E16
E18
Birth
E0E5E10E15BirthP7P56
TS9
E6.5· Streak — gastrulation beginsPrimitive streak forms at the posterior. Mesoderm and definitive endoderm ingress.
1samples
1/1anatomy delineated
histology · 1Histology — embryo physically embedded and microtomed into 1–7 µm sections, stained (Nissl / H&E), imaged, and reassembled into a 3D volume. High in-plane resolution, anisotropic voxels.
3D reference models
Histology plates · 15
Kaufman atlas, EMAPA-annotated · scroll → Plate 03a
TS9 · TS10
Plate 03b
TS9 · TS10
Plate 03c
TS9 · TS10
Plate 03d
TS9 · TS10
Plate 03e
TS9 · TS10
Plate 03f
TS9 · TS10
Plate 03g
TS9 · TS10
Plate 03h
TS9 · TS10
Plate 03i
TS9 · TS10
Plate 03j
TS9 · TS10
Plate 03k
TS9 · TS10
Plate 03l
TS9 · TS10
Plate 03m
TS9 · TS10
Plate 03n
TS9 · TS10
Plate 03o
TS9 · TS10
scRNA-seq · Literature · Predictions — coming soon
Previous
TS8E6
Prestreak
About Theiler staging
Karl Theiler's staging system (1972) partitions prenatal development into 28 morphologically distinct steps. Virtual Embryo aligns all imagery, anatomy, and future spatial transcriptomics data to this axis.
Next
E7TS10
Amnion forms