(n.) A thread or threadlike object or appendage; a fiber; esp. (Bot.), the threadlike part of the stamen supporting the anther.
Example Sentences:
(1) Conditions consistent with a buildup of reduced flavoprotein, however, favored filament formation.
(2) Suspensions of isolated insect flight muscle thick filaments were embedded in layers of vitreous ice and visualized in the electron microscope under liquid nitrogen conditions.
(3) Ordering of these filaments into a parallel array is the basis of birefringence in the A region, and loss of birefringence is therefore a measure of decreased order.
(4) Structural studies indicate that caveolae are decorated on their cytoplasmic surface by a unique array of filaments or strands that form striated coatings.
(5) Accumulations of filaments in the axons and in the perineural cells were accompanied by Rosenthal fibres.
(6) Electron microscopic examination of all leptomeningeal and meningioma cultures revealed desmosomes and dense tonofilament formation; in addition, granular, filamentous basement membrane-like material was abundant in the extracellular spaces of all cultures.
(7) A new method of staining the keratin filament matrix allowing a visualization of the filaments in cross section of hair fibres has been developed.
(8) These force-generators are identified with projections (cross-bridges) on the thick filament, each consisting of part of a myosin molecule.
(9) In smooth muscles there is no organized sarcomere structure wherein the relative movement of myosin filaments and actin filaments has been documented during contraction.
(10) The results indicate that synthesis of lamellar bodies depends on an intact microtubular system, whereas secretion requires actin filaments in a functional state.
(11) The latter reaction is linked to a conformation change of the actin subunit that causes a destabilization of the actin-actin interactions in the filament, i.e., a structural change of the filament.
(12) In the capsule of the fibrocartilage cells, parallel orientated filaments exhibit a periodical arrangement.
(13) The images of 56 tubular myosin filaments of the fleshfly and 62 filaments of the housefly were digitized and computer processed by rotational averaging.
(14) It does not appear to react with the anti-IFA antibody, suggesting that it is not a member of the intermediate filament class of proteins.
(15) This suggests that cytokeratin 14 acts as an indiscriminate type I cytokeratin in filament formation in the established cell lines.
(16) Gene II protein is required for all phases of filamentous phage DNA synthesis other than the conversion of the infecting single strand to the parental double-stranded molecule.
(17) This supports the view that the pH is of no major importance for filamentation in vivo.
(18) Ultrastructural examination of a tumor with a typical cribriform pattern showed spaces of two types; the more frequent type was bounded by cells with straight plasma membranes and contained filamentous and basement-membrane-like material, and the less frequent type was surrounded by cells with numerous microvilli and contained nonfilamentous homogeneous material.
(19) The bright lines in the difference image represent the paths along which the filaments have moved and are measured using a crosshair cursor controlled by the mouse.
(20) Astrocytes showed a transitional swelling, later followed by an accumulation of glycogen and filaments.
Trichome
Definition:
(n.) A hair on the surface of leaf or stem, or any modification of a hair, as a minute scale, or star, or gland. The sporangia of ferns are believed to be of the nature of trichomes.
Example Sentences:
(1) Thus, the genetically conditioned decision of a specific cell to differentiate either a chaeta or a trichome is made during the growth of the wing imaginal disc and is transmitted clonally to descendant cells.
(2) The work shows some distinct differences in trichome morphology as well as variation in their development, due to the effect of indole-3-acetic acid (IAA).
(3) The saturated anacardic acid (C22:0 sat), abundant in the trichome exudate of susceptible strains, was nearly as inhibitory toward both prostaglandin endoperoxide synthase and lipoxygenase as the omega 5-unsaturated compound.
(4) These hormogonia were characterized in terms of their morphology, state of differentiation of the cells, optimal temperature for production and motility, minimal nutritional requirements to sustain motility, liberation of the hormogonium from its parental trichome, average surface velocity, and maximal concentration of agar through which the hormogonium may move.
(5) The characteristics of the growth curve of the organism showed that its growth in shake cultures is by increasing trichome number up to approximately 15 hr and by increasing trichome length after 15 hr.
(6) Illumination of a single cell in the P. uncinatum trichome gives rise to quenching of the fluorescence in this cell and usually in one or two neighbor cells, whereas the rest of trichome remains fluorescing.
(7) Also, this species shows more specialized foliar trichomes which permit the uptake of water and possibly of nutrients.
(8) Previously, we reported that hapten-immune animals showed increased collagen deposition as identified on routine paraffin fixed slides that were stained with Masson's trichome.
(9) The source of the epidemic are the strong sensitizing sesquiterpene lactones parthenin, ambrosin and others, which are highly concentrated in the trichomes of the plant.
(10) changed morphology from rods of about 6 to 8 microns long to multicellular filaments (unsheathed trichomes) up to many hundreds of micrometres long with the addition of glycine or certain D-amino acids to the growth medium.
(11) The putative GL1 promoter directs the expression of the GUS reporter gene in non-trichome-bearing structures that appear to be stipules.
(12) Histochemical localization of the reporter gene product suggests that the as-2 tetramer directs expression in trichomes, vascular elements, and epidermal and mesophyll cells.
(13) It is concluded ethylrhodamine can be used to monitor the power transmission which was previously demonstrated by microelectrode studies of the cyanobacterial trichomes.
(14) The construction of cell hairs (trichomes) on the wings of Drosophila occurs in synchrony on 30,000 cells over a period of about 20 hr.
(15) Haematoxylin and Eosin, Masson's Trichome, and high iron diamine Alcian blue staining was done in all the cases.
(16) A scanning electron microscopic study of trichome morphology of bean embryo, growing in semi-solid synthetic medium, has been undertaken.
(17) In young expanding leaves, P2 protein is concentrated in palisade cells and in epidermal trichomes.
(18) In certain trichomes, several "dark" cells appear during the storage of the trichomes without energy sources.
(19) The GL1 gene is required for the initiation of differentiation of hair cells (trichomes) on the crucifer, Arabidopsis thaliana.
(20) Very similar inhibition was seen with the crude exudate, rich in omega 5-anacardic acids, from glandular trichomes of an arthropod-resistant strain of geranium, Pelargonium xhortorum.