Results 81 to 90 of about 503,811 (193)

Evaluation of the sunscreen lichen substances usnic acid and atranorin

open access: yes, 2015
VAROL, Mehmet/0000-0003-2565-453X;WOS: 000369840500004Usnic acid and atranorin are known as both sunscreen substances in natural lichen population and cytotoxic substances on human cell lines.
Koparal, Ayse Tansu   +4 more
core   +1 more source

Lichen d'Islande et lichen pulmonaire

open access: yes, 1989
Le lichen d'Islande et le lichen pulmonaire font partie de la classe des Ascolichens. Ce sont des thallophytes composés d'un champignon ascomycète et d'une algue verte ou Chlorophycée qui vivent en symbiose.
Collombet, Cécile
core  

Antigenotoxic Effect of Some Lichen Metabolites

open access: yes, 2014
Naturally occurring compounds can have protective effects towards mutagens and carcinogens as shown by numerous studies. Several lichen species have taken quite much the attention of researchers since their extracts and compounds have been used on ...
Hülya Zeytinoğlu Sivas, Sivas, H. Z.
core   +1 more source

On the Biosynthesis of Lichen Substances. Part 3. Lichen Acids as Products of a Symbiosis. [PDF]

open access: yesActa Chemica Scandinavica, 1967
Cecil H. Fox   +4 more
openaire   +2 more sources

Severe Lichen Planus Pigmentosus Inversus in an Elderly Female Following Intra-Articular Injections of Homeopathic Substances

open access: yesDermato
Lichen planus pigmentosus inversus (LIPPI) is a rare variant within the spectrum of lichenoid dermatoses, characterized by sharply demarcated hyperpigmented lesions predominantly affecting intertriginous areas.
Thilo Gambichler   +3 more
doaj   +1 more source

Nordic Lichen Flora Volume 4 – Parmeliaceae

open access: yes, 2011
The lichen flora of the Nordic countries, containing about 2000 species, is regarded as one of the best known in the world. Lichenological research of the region has been continuous since the days of Erik Acharius (1757–1819), the ”father of lichenology”,
Moberg, Roland, Thell, Arne
core  

Additions and corrections to the knowledge of the foliicolous lichen flora of Costa Rica : the genus Fellhanera, with notes on Bacidia pauciseptata [PDF]

open access: yes, 1997
This further contribution to the knowledge of the foliicolous lichen flora of Costa Rica provides a detailed account on the genus Fellhanera. In total, 25 species and five undescribed taxa are treated.
Lücking, Robert
core  

Evaluation of the mutual influence between oral lichen planus and oro-periodontal health

open access: yes, 2022
openINTRODUZIONE Il lichen planus è una malattia infiammatoria cronica che colpisce principalmente la mucosa e la pelle. Clinicamente possono essere identificati diversi tipi di lichen planus orale: reticolare, a placca, atrofico, erosivo, bolloso. Si
BERTOLIN, ELEONORA
core  

Chloroplast Crystalloids and Other Alterations in Response to Lichen Substances [PDF]

open access: yes, 1983
6 pages, figures, and tables statistics.Many lichen phenolics act as allelopathic substances, lowering germination and growth rates of higher plants or even promoting their decay.
Estévez, P., Orus, I., Ascaso, Carmen
core  

Multifocal lichen sclerosus. Case report

open access: yes, 2015
Introduction. Lichen sclerosus (LS) is a chronic, inflammatory dermatosis of unknown etiology affecting skin and mucous membranes. It was first described in 1887 by Darier.
Ewa Hadas   +4 more
core   +1 more source

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