By Maffo Vialli (auth.), Vittorio Erspamer (eds.)

ISBN-10: 3642854672

ISBN-13: 9783642854675

ISBN-10: 3642854699

ISBN-13: 9783642854699

Show description

Read or Download 5-Hydroxytryptamine and Related Indolealkylamines PDF

Best nonfiction_11 books

Output and Employment Fluctuations by Klaus F. Zimmermann (auth.), Professor Dr. Klaus F. PDF

This ebook comprises 4 components: I. Labour call for and provide, II. productiveness slowdown and cutting edge task, III. Disequilibrium and enterprise cycle research, and IV. Time sequence research of output and employment. It offers an exceptional collection of articles within the becoming box ofthe empirical research of output and employment fluctuations with purposes in a micro-econometric or a time-series framework.

Read e-book online Thirty Years of Astronomical Discovery with UKIRT: The PDF

Those are the complaints of a global assembly hosted through the Royal Observatory, Edinburgh, to commemorate the thirtieth anniversary of the commitment of the UKIRT, the uk InfraRed Telescope. the quantity contains 31 specialist point papers. the 1st a part of the e-book has 10 thorough studies of the belief, layout and construct of the telescope, in addition to bills of a few its key tools equivalent to IRCAM (the common-user infrared camera), CGS4 (the fourth Cooled Grating Spectrometer) and the extensive box digicam.

Download e-book for iPad: The Van Allen Probes Mission by N. J. Fox, J. L. Burch (auth.), Nicola Fox, James L. Burch

Records the technology, the undertaking, the spacecraft and the instrumentation on a special NASA venture to check the Earth’s dynamic, risky and engaging Van Allen radiation belts that encompass the planetThis number of articles offers huge and special information regarding NASA’s Van Allen Probes (formerly often called the Radiation Belt typhoon Probes) twin-spacecraft Earth-orbiting venture.

Additional resources for 5-Hydroxytryptamine and Related Indolealkylamines

Sample text

Chicken thymus gland. Fixation: 10 % formalin. enterochromaffin cells are enBodian technique. 132 x countered in certain localizations of a given species, while in another species they are absent , often, argentophil pre-enterochromaffin cells may be present in their place. c) Taxonomical distribution Information on the taxonomical distribution of enterochromaffin cells is of particular interest. As far as we know today, the enterochromaffin cell is charac- Brief notes on the argentophil pre-enterochromaffin cells 23 teristic of the Chordates_ Although most of the information available concerns the vertebrates, we now have some data on its presence also in the tunicates and Cephalochordata_ That typical enterochromaffin cells are present in the Ascidia, was observed in Ciona intestinalis by LISO~ (1933a), who also briefly described their characteristics.

The data indicate, at times, a differential response of the intestine from segment to segment, both in terms of cell number and weighted index of granularity. Observations of PLETSCHER (1957) also concern the decrease in reactivity of the granules under the action of reserpine. Recently, PRUSOFF (1960, 1961), applying the method of homogenization and centrifugation in density gradient mentioned earlier, found that, after treatment with reserpine, the fraction which normally contains 5-HT and ATP shows a lower content of 5-HT and lacks ATP; the quantity of the latter however does not diminish in the mitochondrial fraction.

It has also been assumed that the chemical nature of the granules may vary from one taxonomical group to another. Thus CLARA (1933, 1936), working on amphibians and reptiles (1932), came to the conclusion that it was possible to demonstrate a different reactivity of the granules; these observations are in disagreement with the findings of VIALLI and ERSPAl\IER (1933) who show that the reactions in Holocephali, Selachii, Ganoidei, Amphibians, Reptiles, Birds and Mammals are perfectly concordant, and, therefore - the Authors conclude - the constitution of the specific substance must also be homogeneous.

Download PDF sample

5-Hydroxytryptamine and Related Indolealkylamines by Maffo Vialli (auth.), Vittorio Erspamer (eds.)


by Christopher
4.0

Rated 4.77 of 5 – based on 18 votes