Environmental factors controlling respiration in hydra
โ Scribed by Lenhoff, H. M. ;Loomis, W. F.
- Publisher
- John Wiley and Sons
- Year
- 1957
- Tongue
- English
- Weight
- 424 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0022-104X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Differential equations have been written and solved to describe the concentration gradients for the two hydra growth factors. The equations consider diffusion, catabolism and synthesis of the materials based primarily on the model of hydra growth described by A. L. Burnett. Concentration gradient pr
## Abstract Various investigators have shown that in the marine hydroids, __Tubularia, Obelia, Eudendrium__, and __Pennaria__, regeneration and polarity is affected by an electrical field applied parallel to the regenerate. Using electrical currents up to the physiological limits for __Hydra__, no
## Abstract The distribution of interstitial cells and Iโcell derivatives in hydra is asymmetrical. This asymmetry is expressed apicoโbasally along the stalk and radially with respect to cell layer. An inductive factor concentrated from the tissues of hydra alters this expression of polarity (Lesh
graphy, capillary electrophoresis and mass spectrometry. The test chemical, [ring-U-14 C]paraquat (speciยฎc activity, 2.0 GBq mmol ร1 ) was supplied by the Jealott's Hill radiochemistry department. The radiochemical was diluted with non-radiolabelled paraquat (99.7% pure) prior to use. ## 3 Results