Virtual EmbryoVirtual Embryo
Virtual Embryo Atlas

Developmental timeline

TS1 (fertilized egg) → P56 (adult) · click a stage to load samples
TimelineModality
TS1
TS1
E0.5
1-cell
TS2
TS2
E1
2-cell
TS3
TS3
E2
4-16 cell
TS4
TS4
E3
morula → blastocyst
TS5
TS5
E4
late blastocyst
TS6
TS6
E4.5
attaching blastocyst
TS71
TS7
E5
egg cylinder
TS81
TS8
E6
prestreak
TS91
TS9
E6.5
streak
TS102
TS10
E7
amnion
TS112
TS11
E7.5
neural plate
TS125
TS12
E8
neural folds
TS132
TS13
E8.5
5-8 somites
TS142
TS14
E9
9-12 somites
TS1510
TS15
E9.5
13-20 somites
TS166
TS16
E10
forelimb buds
TS174
TS17
E10.5
hindlimb buds
TS187
TS18
E11
handplate
TS1911
TS19
E11.5
hindlimb handplate
TS203
TS20
E12
digital rays
TS213
TS21
E13.5
finger separation
TS222
TS22
E14
eyelid formation
TS2316
TS23
E15
eyelids closing
TS246
TS24
E15.5
ear pinna
TS255
TS25
E16.5
long whiskers
TS262
TS26
E17.5
body hair
TS271
TS27
E18.5
pre-birth
P7
P7
P7
postnatal day 7
P56
P56
P56
adult (8 weeks)
E0
E2
E4
E6
E8
E10
E12
E14
E16
E18
Birth
E0E5E10E15BirthP7P56

TS11

E7.5· Neural plate

Anterior neural plate appears. Heart field and somitic mesoderm specify.

2samples
1/2anatomy delineated
histology · 2Histology — 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
histologymeshlabels
EMA17
2×2×2 μm
Open viewer →
histology
EMA219
2×2×2 μm
Open viewer →
Histology plates · 50
Kaufman atlas, EMAPA-annotated · scroll →
ds_10283_1002Sagittal12 ann
Plate 05a
TS11
ds_10283_1003Sagittal4 ann
Plate 05b
TS11
ds_10283_1004Sagittal6 ann
Plate 05c
TS11
ds_10283_1005Sagittal5 ann
Plate 05d
TS11
ds_10283_1006Sagittal3 ann
Plate 05e
TS11
ds_10283_1007Sagittal3 ann
Plate 05f
TS11
ds_10283_1008Sagittal5 ann
Plate 05g
TS11
ds_10283_1009Sagittal4 ann
Plate 05h
TS11
ds_10283_1010Sagittal6 ann
Plate 05i
TS11
ds_10283_1011Sagittal4 ann
Plate 05j
TS11
ds_10283_1012Transverse2 ann
Plate 06a
TS11
ds_10283_1013Transverse6 ann
Plate 06b
TS11
ds_10283_1014Transverse1 ann
Plate 06c
TS11
ds_10283_1015Transverse2 ann
Plate 06d
TS11
ds_10283_1016Transverse2 ann
Plate 06e
TS11
ds_10283_1017Transverse2 ann
Plate 06f
TS11
ds_10283_1018Transverse6 ann
Plate 06g
TS11
ds_10283_1019Transverse4 ann
Plate 06h
TS11
ds_10283_1020Transverse2 ann
Plate 06i
TS11
ds_10283_1021Transverse3 ann
Plate 06j
TS11
ds_10283_1022Transverse3 ann
Plate 06k
TS11
ds_10283_1023Transverse3 ann
Plate 06l
TS11
ds_10283_1024Transverse8 ann
Plate 07a
TS11
ds_10283_1025Transverse3 ann
Plate 07b
TS11
ds_10283_1026Transverse3 ann
Plate 07c
TS11
ds_10283_1027Transverse3 ann
Plate 07d
TS11
ds_10283_1028Transverse2 ann
Plate 07e
TS11
ds_10283_1029Transverse1 ann
Plate 07f
TS11
ds_10283_1030Transverse3 ann
Plate 07g
TS11
ds_10283_1031Transverse1 ann
Plate 07h
TS11
ds_10283_1032Transverse7 ann
Plate 07i
TS11
ds_10283_1033Transverse1 ann
Plate 07j
TS11
ds_10283_1034Transverse3 ann
Plate 07k
TS11
ds_10283_1035Transverse5 ann
Plate 07l
TS11
ds_10283_1036Transverse3 ann
Plate 07m
TS11
ds_10283_1037Transverse4 ann
Plate 07n
TS11
ds_10283_1038Transverse3 ann
Plate 07o
TS11
ds_10283_1039Transverse3 ann
Plate 07p
TS11
ds_10283_1040Transverse2 ann
Plate 08a
TS11
ds_10283_1041Transverse2 ann
Plate 08b
TS11
ds_10283_1042Transverse7 ann
Plate 08c
TS11
ds_10283_1043Transverse11 ann
Plate 08d
TS11
ds_10283_1044Transverse4 ann
Plate 08e
TS11
ds_10283_1045Transverse3 ann
Plate 08f
TS11
ds_10283_1046Transverse1 ann
Plate 08g
TS11
ds_10283_1047Transverse2 ann
Plate 08h
TS11
ds_10283_1048Transverse2 ann
Plate 08i
TS11
ds_10283_1049Transverse2 ann
Plate 08j
TS11
ds_10283_1050Transverse2 ann
Plate 08k
TS11
ds_10283_1051Transverse3 ann
Plate 08l
TS11
scRNA-seq · Literature · Predictions — coming soon
←TS10
Previous
TS10E7
Amnion forms
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.

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E8TS12
Neural folds
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