Results 31 to 40 of about 80,550 (200)

HPV-18 transformed cells fail to arrest in G1 in response to quercetin treatment [PDF]

open access: yes, 2005
Previous work with primary human keratinocytes demonstrated that quercetin, a potent mutagen found in high levels in bracken fern (Pteridium aquilinum), arrested cells in G1 with concomitant elevation of the cyclin-dependent kinase inhibitor (cdki ...
Alonso-Amelot   +37 more
core   +1 more source

A comparative study of resource allocation in Pteridium in different Brazilian ecosystems and its relationship with European studies

open access: yesBrazilian Journal of Biology
Pteridium is a cosmopolitan genus that acts as an invasive species in many parts of the world. Most research on this genus has occurred in Europe, and there is a lack of data on it from South America, in spite of causing considerable conservation ...
DM Silva Matos   +3 more
doaj   +1 more source

Invasion impact by Pteridium arachnoideum (Kaulf.) Maxon (Dennstaedtiaceae) on a neotropical savanna

open access: yesActa Botânica Brasílica, 2015
Whether management intervention is required to control biological invasions depends primarily on demonstrating species losses resulting from such invasions. Brackens of the Pteridium genus are currently regarded as a problem species that act as important
Natalia Guerin, Giselda Durigan
doaj   +1 more source

The role of Pteridium arachnoideum(Kaulf) on the seed bank of the endangered Brazilian Cerrado

open access: yesBrazilian Journal of Biology
The native bracken (Pteridium arachnoideum) often occurs in mono-specific stands in the Brazilian Cerrado, and this dominance can impact on both the above-ground vegetation and soil seed bank.
R. O. Xavier   +3 more
doaj   +1 more source

Fate of ptaquiloside-A bracken fern toxin-In cattle.

open access: yesPLoS ONE, 2019
Ptaquiloside is a natural toxin present in bracken ferns (Pteridium sp.). Cattle ingesting bracken may develop bladder tumours and excrete genotoxins in meat and milk.
Paulo César Dos Reis Aranha   +5 more
doaj   +1 more source

Ultrafast and accurate 16S rRNA microbial community analysis using Kraken 2

open access: yesMicrobiome, 2020
Background For decades, 16S ribosomal RNA sequencing has been the primary means for identifying the bacterial species present in a sample with unknown composition.
Jennifer Lu, Steven L. Salzberg
doaj   +1 more source

Exogenous preculture with sucrose and abscisic acid improves post-cryopreservation survival of eastern bracken fern gametophytes

open access: yesScientific Reports, 2023
Cryopreservation is an important technique used in the conservation of various plant tissues. This study proposes a cryopreservation method for the long-term conservation of eastern bracken fern gametophytes (Pteridium aquilinum var.
Bo-Kook Jang   +4 more
doaj   +1 more source

Potential and historical Uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agriculture [PDF]

open access: yes, 2002
This report was presented at the UK Organic Research 2002 Conference. Bracken is considered a serious weed species, due to its toxic constituents and negative impacts on agriculture and conservation.
Donnelly, Eric   +2 more
core  

Pathomorphological and immunohistochemical studies of tumours in the urinary bladders of water buffalo in marmara, the central and western black sea region of turkey [PDF]

open access: yesKafkas Universitesi Veteriner Fakültesi Dergisi, 2017
In this study, non-neoplastic and neoplastic lesions in the urinary bladders of water buffalo were determined in the Marmara, the central and western part of the Black Sea region of Turkey.
YÜCEL TENEKECİ G   +4 more
doaj   +1 more source

Reframing the Fields [PDF]

open access: yes, 2004
The conception of metaphoric process elaborated by Mary Gerhart and Allan Russell illuminates a key mechanism often involved in the most significant advances in science and religion.
Burrell David   +6 more
core   +2 more sources

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