ZIB

Treffer pro Seite

Treffer 1 - 2 | 2 Treffer

Sortierung

Digitale Medien

Ibelgaufts, H. ; Jones, K. W. ; Maitland, N. ; [weitere]

Springer

Acta neuropathologica 56 (1982), S. 113-117

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-0533

Schlagwort(e): Brain tumours ; Etiology ; Adenoviruses ; Nucleic acid hybridization

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary Thirty two human tumours, mainly neurogenic, have been investigated for the presence of adenovirus-related RNA sequences.3H-labelled tumour virus DNA probes derived from human adenoviruses types 2 and 12, bovine adenovirus type 3, and avian adenovirus CELO were hybridized in-situ on tumour kryostat sections under conditions that detect complementary RNA. Tumour virus-related RNA was detected in 62% of all tumours tested, but was not detectable in normal human brain tissues. Expression of tumour virus-related RNA was found in 2/4 astrocytomas, 2/4 metastatic brain carcinomas, 2/2 glioblastomas, 1/1 melanoma, 5/7 meningiomas, 4/4 neurinomas, 1/2 oligodendrogliomas, and 1/1 rhabdomyosarcoma. The presence of adenovirus-related RNA in the majority of human neurogenic tumours may reflect a viral involvement in the pathogenesis of these tumours.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00690581

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Digitale Medien

Stomatal responses of Argenteum — a mutant of Pisum sativum L. with readily detachable leaf epidermis (1982)

Jewer, P. C. ; Incoll, L. D. ; Shaw, J.

Springer

Planta 155 (1982), S. 146-153

zur Merkliste hinzufügen auf der Merkliste

Details

ISSN: 1432-2048

Schlagwort(e): Abscisic acid ; Cytokinin ; Mutant (barley) ; Pisum ; Potassium and stomata protoplast ; Stomata (epidermis)

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie

Notizen: Abstract Epidermis is easily detached from both adaxial and abaxial surfaces of leaf four of the Argenteum mutant of Pisum sativum L. The isolated epidermis has stomata with large, easily-measured pores. Hairs and glands are absent. The density of stomata is high and contamination by mesophyll cells is low. In the light and in CO2-free air, stomata in isolated adaxial epidermis of Argenteum mutant opened maximally after 4 h incubation at 25°C. The response of stomata to light was dependent on the concentration of KCl in the incubation medium and was maximal at 50 mol m-3 KCl. Stomata did not respond to exogenous kinetin, but apertures were reduced by incubation of epidermis on solutions containing between 10-5 and 10-1 mol m-3 abscisic acid (ABA). The responses of stomata of Argenteum mutant to light, exogenous KCl, ABA and kinetin were comparable with those described previously for stomata in isolated epidermis of Commelina communis. A method for preparing viable protoplasts of guard cells from isolated epidermis of Argenteum mutant is described. The response of guard cell protoplasts to light, exogenous KCl, ABA and kinetin were similar to those of stomata in isolated epidermis except that the increase in volume of the protoplasts in response to light was maximal at a lower concentration of KCl (10 mol m-3) and that protoplasts responded more rapidly to light than stomata in isolated epidermis. The protoplasts did not respond to exogenous kinetin, but when incubated for 1 h in the light and in CO2-free air on a solution containing 10-3 mol m-3 ABA, they decreased in volume by 30%. The advantages of using epidermis from Argenteum mutant for experiments on stomatal movements are discussed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00392545

Permalink

Bibliothek	Standort	Signatur	Band/Heft/Jahr	Verfügbarkeit

Andere fanden auch interessant ...

Artikel (Nationallizenzen)

Volltext

Treffer 1 - 2 | 2 Treffer