منابع مشابه
Nuclear sheets in the egg of a fern, Dryopteris filix-mas.
In the maturing egg of Dryopteris filix-mas the nucleus is shown to produce sheet-like extensions into the cytoplasm, resembling those described in certain somatic cells of animals. In these sheets the distance between the 2 inner membranes of the envelope is regularly of the order of 45-50 nm, and the nuclear material is organized into a monolayer of electron-opaque aggregates 35-40 nm in diam...
متن کاملDryopteris filix-mas (L.) Schott ethanolic leaf extract and fractions exhibited profound anti-inflammatory activity
Objective: Dryopteris filix-mas (D. filix-mas) (L.) Schott, (Dryopteridaceae) is used in traditional medicine, particularly</span...
متن کاملEffects of Chloroform Extract of Dryopteris crassirhizoma on the Ultramicroscopic Structures of Meloidogyne incognita
In our early experiments, the chloroform extract of D. crassirhizoma was demonstrated to contain the highest concentrations of total phloroglucinols among several extract fractions and possessed the most effective nematicidal activity. This study aimed to ascertain the ultrastructural changes in M. incognita after treatment with a D. crassirhizoma chloroform extract at 1 mg·mL⁻¹ for 24 h. It wa...
متن کاملaCGH-MAS: Analysis of aCGH by means of Multiagent System
There are currently different techniques, such as CGH arrays, to study genetic variations in patients. CGH arrays analyze gains and losses in different regions in the chromosome. Regions with gains or losses in pathologies are important for selecting relevant genes or CNVs (copy-number variations) associated with the variations detected within chromosomes. Information corresponding to mutations...
متن کاملFern rhizomes as fodder in Norway
BACKGROUND Although ferns are often known under collective names in Norway, e.g. blom, a substantial number of vernacular names for individual fern species are known, in particular for useful or poisonous taxa. In the past, the rhizomes (Norwegian: moldfôr) of selected species were collected for fodder. Only scattered records of such use are available from southern Norway, and the tradition's c...
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ژورنال
عنوان ژورنال: American Fern Journal
سال: 1980
ISSN: 0002-8444
DOI: 10.2307/1546751