Early development: X. laevis histology

The Early Development of Xenopus laevis: An Atlas of the Histology

Peter Hausen and Metta Riebsell
1991

Verlag der Zeitschrift für Naturforschung

ISBN: 0-387-53740-6

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The Early Development
of Xenopus laevis
Hausen and Riebsell
Book cover.

 

Oogenesis

 

 

Plate 1: Oogenesis, oocyte stage VI. The fully grown oocyte.
Higher resolution Plate 1.

Plate 2: Oogenesis: Premeiotic oogonia and oocyte in early meiotic prophase.
Higher resolution Plate 2.
Sections 2a, 2b, 2c, 2d, 2e, 2f, 2g, and 2h.

Plate 3: Oogenesis: Oocytes, Stages I-IV.
Higher resolution Plate 3.
Sections 3a, 3b, 3c, 3d, 3e, 3f, and 3g.

Oocyte maturation

 

 

Plate 4: Initiation of germinal vesicle breakdown.
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Plate 5: Progression of germinal vesicle breakdown.
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Plate 6: Progression of germinal vesicle breakdown.
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Plate 7: Completion of germinal vesicle breakdown.
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Plate 8: Mature egg, first meotic metaphase.
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Oogenesis and Maturation

 

 

Plate 9: Nuclear events during meiosis at higher magnification
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Sections 9a, 9b, 9c, 9d, 9e, 9f, 9g, 9h, 9i, 9j, and 9k.

Fertilized egg

 

 

Plate 10: Embryo stage 1, Formation of the second polar body. 20 min. p.f.
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Plate 11: Embryo stage 1, Pronuclear migration. 35 min. p.f.
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Plate 12: Embryo stage 1, Karyogamy. 45 min. p.f.
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First cleavage

 

 

Plate 13: Embryo stage 1+, Telophase of first cleavage division, onset of cytokinesis. 1 h p.f.
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Plate 14: Embryo stage 2-, Early first cleavage. 1 h 15 min p.f.
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2-cell stage

 

 

Plate 15: Embryo stage 2, Completion of first cleavage division. 1 h 30 min p.f.
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8-cell stage

 

 

Plate 16: Embryo stage 4, Completion of the third cleavage division. 2 h 15 min p.f.
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Fine-cell blastula

 

 

Plate 17: Embryo stage 9, Late midblastula. 7 h p.f.
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Early gastrula

 

 

Plate 18: Embryo stage 10+, Onset of gastrulation. 10 h p.f.
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Midgastrula

 

 

Plate 19: Embryo stage 11.5, Large yolk plug stage. 12 h 15 min p.f.
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Advanced gastrula

 

 

Plate 20: Embryo stage 13, Small yolk plug stage. 14 h 55 min p.f.
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Plate 21: Embryo stage 12.5, Small yolk plug stage. 14 h 30 min p.f.
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Plate 22: Embryo stage 12.5, Small yolk plug stage. 14 h 30 min p.f. A. Cell arrangement within the zone of involution. B. The structure of the postinvolution mesoderm.
Higher resolution plate sections 22a and 21b.

Neural plate stage

 

 

Plate 23: Embryo stage 14, The neural plate. 16 h 15 min p.f.
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Neurula

 

 

Plate 24: Embryo stage 15, Mid neural fold stage. 17 h p.f.
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Plate 25: Embryo stage 15, Mid neural fold stage. 17 h p.f.
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Plate 26: Embryo stage 16, Mid neural fold stage. The beginning of eye development. 18 h 15 min p.f.
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Plate 27: Embryo stage 16, Mid neural fold stage. Neural tube formation in the head region at the level of the rhombencephalon. 18 h 15 min p.f.
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Plate 28: Embryo stage 16, Mid neural fold stage. Neural tube formation in the trunk region. 18 h 15 min p.f.
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Plate 29: Embryo stage 17, Late neural fold stage. The onset of somitogenesis. 18 h 45 min p.f.
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Plate 30: Embryo stage 18, Neural groove stage. Neural tube closure. 19 h 45 min p.f.
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Neural tube stage

 

 

Plate 31: Embryo stage 20, Neural tube stage. Cell arrangement in the notochord. 21 h 45 min p.f.
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Plate 32: Embryo stage 20, Neural tube stage. Somite formation continued. 21 h 45 min p.f.
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Plate 33: Embryo stage 20, Neural tube stage. Neural tube closed. 21 h 45 min p.f.
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Plate 34: Embryo stage 20, Neural tube stage. Evagination of the eye vesicle from the proencephalic region. 21 h 45 min p.f.
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Early tail bud stage

 

 

Plate 35: Embryo stage 22, Early tail bud stage. The somite pattern. 24 h p.f.
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Plate 36: Embryo stage 23, Early tail bud stage. The basic body pattern (I). 1 d 45 min p.f.
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Plate 37: Embryo stage 23, Early tail bud stage. The basic body pattern (II). 1 d 45 min p.f.
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Plate 38: Embryo stage 23, Early tail bud stage. A. Formation of the pronephric anlage. B. Eye formation. 1 d 45 min p.f.
Higher resolution Plate 38a and 38b.

Tail bud stage

 

 

Plate 39: Embryo stage 26, Tail bud stage. The tail bud stage embryo. 1d 5 h p.f.
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Plate 40: Embryo stage 26, Tail bud stage. A. Horizontal section through the head. B. Sagittal section through the head. 1d 5 h p.f.
Higher resolution Plate 40a and 40b.

Plate 41: Embryo stage 26, Tail bud stage. A. Development of the pronephros continued. B. Development of the eye continued. 1d 5 h p.f.
Higher resolution Plate 41a and 41b.

Plate 42: Embryo stage 27, Tail bud stage. A. The ear vesicle. B. Lens formation. 1d 7 h p.f.
Higher resolution Plate 42a and 42b.

Early stages of ear and
pronephros development
at higher magnifications

 

 

Plate 43: Embryo stages 21-27. Ear anlage at A. stage 21, B. stage 24, C. stage 27. Pronephric anlage at D. stage 21, E. stage 24, F. stage 27.
Higher resolution plate sections 43a, 43b, 43c, 43d, 43e, and 43f.