Leukotrienes in teleost fish gills
β Scribed by D. Piomelli
- Publisher
- Springer
- Year
- 1985
- Tongue
- English
- Weight
- 447 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0028-1042
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β¦ Synopsis
Rosettes", putative cellulose synthesizing complexes in the PF of the plasma membrane, have now been described in a variety of objects from algae to higher plants (for a review see than moss caulonema cells. Correspondingly, Herth et al. [8] reported that cellulose is only a minor part of the lily pollen tube wall. The complete absence o f " rosettes" in tobacco pollen tubes, described by Kroh and Knuiman [4], is presumably an artifact.' Most of the pollen tubes burst during preparation, and freeze fracture studies of this object are very delicate. The present study supports the assumption that "rosettes" are involved in cellulose synthesis, and that their frequency on the plasma membrane is an indicator for the quantity of cellulose produced.
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Varying the concentration of un-ionized ammonia (NH,) in the medium perfusing the gills of the isolated fish head while holding the total ammonia (NH,' + NH,) concentration constant had no significant effect on gill ammonia excretion. In contrast, alteration in the medium NH,+ concentration at a fix
## Abstract The effects of hydrostatic pressure on branchial NaKβATPase and MgβATPase activities were studied in two species of marine teleost fish: the relatively shallow water __Scorpaena guttata__, collected from a depth of 20 m, and the deeper living __Anoplopoma fimbria__, collected from a dep
## Abstract We have demonstrated the presence of Ξ²βhydroxybutyrate dehydrogenase (Ξ²βHBDH) in tissues of a variety of freshwater and marine teleosts. This enzyme was previously thought to be absent in teleost fish. Ξ²βHBDH activity was examined in four freshwater teleosts: goldfish, __Carassius aurat