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Atlas: tissues: kidney, pronephros

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The pronephroi (plural of pronephros), also known as the head kidneys, are labeled blue in the above sample due to the uptake of fluorescent proteins from the blood. Xenopus pronephroi leak large amounts of protein during glomeral filtration which are later recovered by transepithelial transport. See Zhou and Vize 2004 for details.   Dynamic Java model of pronephros. Click and drag on the kidney to rotate or roll. The different segments of the pronephric tubules are labeled on one side. The unlabeled pronephric tubules are yellow. The glomus is shown in green. For a larger model see the contributing 3D kidney page. For details on this technology visit the 3D site.

The images below illustrate pronephric tubule morphology.

[click image to view enlargement]

Pronephric tubules labeled by FCIS with a sodium bicarnonate cotransporter and NaK ATPase. Copyright © 2004 Academic Press
Sodium-potassium ATPase expression in pronephric tubules.
Sodium-potassium ATPase expression in pronephric tubules. Confocal micrograph combining fluorescent and transmitted light.
Pronephric tubules labeled by FCIS with an amino acid transporter and NaK ATPase. Blue stain is in late proximal segment. Copyright © 2004 Academic Press
Early distal segment labeled red and late distal segment labeled green.
Pronephric tubule segment nomenclature. Copyright © 2004 Academic Press
Stage 35 pronephric tubules: lateral view, anterior to the left. Propidium iodide staining. Wallingford et al. 1998   Stage 35 pronephros, transverse. Propidium iodide staining. Wallingford et al. 1998. Images are Copyright © 1998 Academic Press
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