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Gene Expression Data
Assay Details
Assay
Reference: J:32932 Meno C, et al., Left-right asymmetric expression of the TGF beta-family member lefty in mouse embryos. Nature. 1996 May 9;381(6578):151-5
Assay type: RNA in situ
MGI Accession ID: MGI:5463912
Gene symbol: Lefty1
Gene name: left right determination factor 1
Probe: Lefty probe
Probe preparation: Antisense RNA
Results
Specimen not shown: embryonic day 6.0 (more )
Structure Level Pattern Image Note
TS8: embryo Absent

Specimen 3a: embryonic day 6.5 (more )
Structure Level Pattern Image Note
TS9: primitive streak Present Regionally restricted 3a Expression was detected in the anterior half of the streak.

Specimen 3b: embryonic day 7.0 (more )
Structure Level Pattern Image Note
TS10: primitive streak Present Regionally restricted 3b Expression was detected along the streak except at the caudal and rostral extremities.

Specimen 3c: embryonic day 7.0 (more )
Structure Level Pattern Image Note
TS10: embryo mesoderm Present 3c There was no assymmetry in the expression at this stage.

Specimen not shown: embryonic day 7.5 (more )
Structure Level Pattern Image Note
TS10: embryo mesoderm Weak

Specimen not shown: embryonic day 7.75 (more )
Note: Presomite headfold stage.
Structure Level Pattern Image Note
TS11: embryo Absent

Specimen 3d: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: embryo Present Regionally restricted 3d Expression was highly expressed in 2 regions. Staining in the lateral region extended laterally along the anteroposterior axis. The second region was near the ventral midline. Expression was only on the left side.

Specimen 3e: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: embryo Present Regionally restricted 3e Expression was highly expressed in 2 regions. Staining in the lateral region extended laterally along the anteroposterior axis. The second region was near the ventral midline.

Specimen 3f: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: cardiogenic plate Absent 3f No expression was detected in promyocardium.
TS12: endocardial tube Absent 3f No expression was detected in endocardium.
TS12: notochord Absent 3f
TS12: notochordal plate Absent 3f

Specimen 3g: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: neural plate Present Regionally restricted 3g Expression was asymmetric; it was found exclusively on the left.
TS12: splanchnopleure Present Regionally restricted 3g Expression was asymmetric; it was found exclusively on the left.
TS12: notochord Absent 3g
TS12: notochordal plate Absent 3g

Specimen 3h: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: splanchnopleure Present Regionally restricted 3h Expression was asymmetric; it was found exclusively on the left.
TS12: neural plate Present Regionally restricted 3h In the anterior region, at the level of the midbrain/hindbrain, expression was found exclusively on the left.
TS12: notochord Absent 3h
TS12: notochordal plate Absent 3h

Specimen 3i & 3m: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: splanchnopleure Present Regionally restricted 3i , 3m Expression was asymmetric; it was found exclusively on the left.
TS12: neural plate Present Regionally restricted 3i , 3m In the anterior region, at the level of the midbrain/hindbrain, expression was found exclusively on the left.
TS12: notochord Absent 3m , 3i
TS12: notochordal plate Absent 3m , 3i

Specimen 3j (middle): embryonic day 8.0 (more )
Note: Curator's note: Fig. 3 has two panes labeled as 'j'. The data for 3j has been assigned to this specimen based on the pane's position in the figure.
Structure Level Pattern Image Note
TS12: splanchnopleure Present Regionally restricted 3j (middle) Expression was asymmetric; it was found exclusively on the left.
TS12: neural plate Present Regionally restricted 3j (middle) Expression gradually came closer to the midline in more posterior regions.
TS12: notochord Absent 3j (middle)
TS12: notochordal plate Absent 3j (middle)

Specimen 3k: embryonic day 8.0 (more )
Structure Level Pattern Image Note
TS12: splanchnopleure Present Regionally restricted 3k Expression was asymmetric; it was found exclusively on the left.
TS12: neural plate Present Regionally restricted 3k Expression gradually came closer to the midline in more posterior regions.
TS12: notochord Absent 3k
TS12: notochordal plate Absent 3k

Specimen 3j (top right): embryonic day 8.0 (more )
Note: Curator's note: Fig. 3 has two panes labeled as 'j'. The data for 3l has been assigned to this specimen based on the pane's position in the figure.
Structure Level Pattern Image Note
TS12: neural plate Present Regionally restricted 3j (top right) Expression reached the midline in the region near the node.
TS12: notochord Absent 3j (top right)
TS12: notochordal plate Absent 3j (top right)

Specimen not shown: embryonic day 8.5 (more )
Note: 6-8 somites.
Structure Level Pattern Image Note
TS13: embryo Absent

Specimen 4a left: embryonic day 8.0; Dnah11iv/Dnah11iv (more )
Note: 3-4 somites.
Structure Level Pattern Image Note
TS12: embryo Present Regionally restricted 4a left In 3/7 homozygous mutant embryos the expression pattern was inverted and found on the right side.

Specimen 4a right: embryonic day 8.0; Dnah11iv/Dnah11iv (more )
Note: 3-4 somites.
Structure Level Pattern Image Note
TS12: embryo Present Regionally restricted 4a right In 4/7 homozygous mutant embryos the expression was on the left side.

Specimen 4b: embryonic day 8.0; Dnah11iv/Dnah11iv (more )
Note: 3-4 somites.
Structure Level Pattern Image Note
TS12: neural plate Present Regionally restricted 4b In 3/7 homozygous mutant embryos the expression pattern was inverted and found on the right side.
TS12: splanchnopleure Present Regionally restricted 4b In 3/7 homozygous mutant embryos the expression pattern was inverted and found on the right side.
TS12: somatopleure Present 4b Ectopic expression in the somatopleure was noted in all homozygous mutant embryos.

Specimen 4c: embryonic day 8.0; Dnah11iv/Dnah11iv (more )
Note: 3-4 somites.
Structure Level Pattern Image Note
TS12: neural plate Present Regionally restricted 4c In 4/7 homozygous mutant embryos the expression was on the left side.
TS12: splanchnopleure Present Regionally restricted 4c In 4/7 homozygous mutant embryos the expression was on the left side.
TS12: somatopleure Present 4c Ectopic expression in the somatopleure was noted in all homozygous mutant embryos.


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last database update
12/30/2025
MGI 6.24
The Jackson Laboratory