✦ LIBER ✦

Formation of the pronephros and pronephric duct rudiment in the Mexican axolotl

✍ Scribed by Laura L. Gillespie; John B. Armstrong

Publisher: John Wiley and Sons
Year: 1985
Tongue: English
Weight: 710 KB
Volume: 185
Category: Article
ISSN: 0362-2525
DOI: 10.1002/jmor.1051850207

No coin nor oath required. For personal study only.

✦ Synopsis

In the Mexican axolotl (Ambystoma mexicanum), the pronephros begins to form at the four-somite stage. It is initially continuous with the posterior-lateral region of somite 2 and the lateral margin of somites 3 and 4. By the seven-somite stage, the pronephros has become compacted, and the cells are now morphologically distinct from the somitic cells. At this stage, a mass of loosely connected cells, apparently originating from the lateral mesoderm, is seen below somites 4 and 5. By the eight-somite stage, these presumptive duct cells have migrated dorsally to the duct path and are found below somites 5-7. By the nine-somite stage they have begun to migrate caudally.

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