β Scribed by Khalil, Fouad ;Haggag, Gaber
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The slug, __Limax flavus__, excretes both urea and purines. Urea and purines account for up to 59 and 41% of the excretory nitrogen, respectively. Of the purines excreted uric acid predominates (64%) with quanine (22%) and xanthine (14%) usually being voided in lesser amounts. Neither
## Abstract The major mechanisms of urea turnover and of active ion transport in osmoregulaβ tory organs are reviewed. Using published values for the molecular flow through these systems it is possible to estimate the energetic cost of osmotic regulation in hyporegulating marine teleosts and in ure
## Abstract Activities of arginase, xanthine dehydrogenase, and uricase were measured in liver and kidney of adult __Phyllomedusa sauvagei__ and __P. hypochondrialis__ to examine the enzymatic basis of their unusual ability to excrete uric acid. Comparable values were obtained for two species of ur
The permeability of toadfish gills and skin to urea and water has been measured in order to investigate the mechanisms behind the pulsatile excretion of urea previously described in this species. A perfused gill preparation was used in the gill studies and isolated pieces of skin mounted in an Ussin