Although the anuran pronephros has been the subject of numerous investigations, its entire developmental history has never been worked out in a single species. The average textbook account can readily be noted to have been assembled from studies on a number of forms. The present account, dealing wit
Phenol red transport in the pronephros and mesonephros of the developing frog (Rana pipiens)
โ Scribed by Jaffe, Oscar Charles
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1954
- Tongue
- English
- Weight
- 819 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0095-9898
No coin nor oath required. For personal study only.
โฆ Synopsis
T W O FIGURES
The cellular transport of phenol red has been demonstrated in mesonepliric and inetanephric kidneys, and the metabolic processes involved in the transport meclittiiism analyzed. The present report deals with phenol red transport in the pronephros.
Since the pronephros is the initial kidney in the renal developniental sequence, it is of interest to learn of the role it plays in the development of renal function. Both pronephros and mesonephros a r e present simultaneously for a considerable portion of the larval life of the frog. This has been shown in the analysis of the developnicntal morphology of the pronephros upon which the present experimental series is based. Since Gersh ('37) has shown that the mesonephros and nietanephros of the chick and some niarnnials function synchronously, the pronephros and mesonephros of the larval anuran were examined to determine whether the same situation obtained.
Armstrong ( '32) has demonstrated phenol red elimination in the proiiephric tubules of Fundulzis heteroclitus, and * Material taken from a thesis submitted t o the Faculty of
๐ SIMILAR VOLUMES
Rana pipiens were divided into four groups: controls; hypocalcemic frogs, depleted of salts by acclimation to deionized water; hypercalcemic frogs, calcium-loaded by the introduction of 40 ยตmol calcium gluconate; and frogs exposed to the potential competing ions Mg 2+ , Sr 2+ , and Ba 2+ . All group
## Abstract Histochemical characteristics of the integumentary mucous glands of the leopard frog (__Rana pipiens__) are described so that their role in water balance can be better understood. Mucus is acidic, due to its content of sulfate and carboxylic acids. The carbohydrate moiety contains perio