Zeitschrift für Naturforschung. C, A journal of biosciences.
Publisher:
Verlag der Zeitschrift für Naturforschung,. Berlin : De Gruyter
Frequency: Monthly
Country: Germany
Language: English
Author(s):
Max-Planck-Gesellschaft zur Förderung der Wissenschaften.
Start Year:1986 -
ISSN:
0939-5075 (Print)
1865-7125 (Electronic)
0341-0382 (Linking)
1865-7125 (Electronic)
0341-0382 (Linking)
Impact Factor
2
2022
| NLM ID: | 8912155 |
| (DNLM): | SR0065768(s) |
| (OCoLC): | 15666516 |
| Coden: | ZNCBDA |
| LCCN: | 88640783 |
| Classification: | W1 ZE4957 |
Toxicity of Palicourea marcgravii: combined effects of fluoroacetate, N-methyltyramine and 2-methyltetrahydro-beta-carboline. Feeding experiments carried out with cattle and horses could prove the toxic effects of P. marcgravii (Rubiaceae) in all cases. The typical symptoms of "sudden death", however, are observed in ruminants only. This difference could not be explained so far. Apart from fluoroacetate, two more substances also have influence the toxic effects and have been isolated from P. marcgravii for the first time: N-methyltyramine and 2-methyltetrahydro-beta-carboline (2-Me THBC). Structure elucidation of these compounds is mainly accomplished by 1H-NMR, 13C-NMR and MS techniques. Due to the small quantity of...
Electron microscopical morphology of cytoplasmic granules from horse eosinophil leucocytes. The structure of specific granules from horse eosinophil leukocytes is still largely unknown. In this work, electron microscopical studies of horse eosinophils reveal that the large cytoplasmic granules contain an external membrane, a matrix of less density, and a dense (non crystalline) core. Round vacuolar inclusions of matrix materials were often observed within the cores. Horse eosinophil granules showed a considerable heterogeneity, and three morphological types could be identified according to structural features of the core and matrix.