(n.) A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens.
Example Sentences:
(1) Peripheral hyphae were separated from the remaining thallus of Rhizoctonia solani in exponential and stationary phases of growth.
(2) The plasmalemma of thallus cells of the aquatic liverwort, Riccia fluitans, is reversibly depolarized by L- and D-serine.
(3) Their variations depend on the physiological and biochemical states of the thallus and on the conditions of extraction and purification.
(4) Thallus development, zoospore size, zoospore ultrastructural complexity and organization, and flagellum length are cited as important in phylogeny of the Chytridiales (chytrids) and should be the bases for this classification.
(5) Previous results showed that cell disintegration in the fungus Podospora anserina occured through the action of two proteases, enzymes whose messengers were normally latent during the extension stage of the thallus.
(6) There are no significant differences in the durrent density over the thallus cell.
(7) Little bromoperoxidase activity was obtained when fresh thallus material was extracted in Tris buffer.
(8) Incipient zoospores are produced from a multinucleate eucarpic thallus and devlop within cleavage vacuoles containing flagella.
(9) The action spectra of light reaction I, we found under these conditions, are very similar to the thallus absorption, whilst the action spectra of light reaction II show, besides strong bands of the phycobilins, only minor bands of chlorophyll a, which account for only 10-20% of the total chlorophyll.
(10) When a particulate enzyme preparation from the thallus of A. niger was incubated with GDP-[(14)C]mannose, the main radioactive products were mannose 1-phosphate (57% of products) and mannose (18%).
(11) In the presence of 10(-5) to 10 (-8) M carbonyl cyanide m-chlorophenylhydrazone (CCCP) the membrane potential of thallus cells of the aquatic liverwort Riccia fluitans responds to changes of the external pH between 5.5 and 8.3.
(12) Many things, in Thoreau's liberated state, are worth the while to see - the feeding manners of chickadees, and the trickles of spring thaw along the railroad cut, "resembling, as you look down on them, the laciniated lobed and imbricated thalluses of some lichens".
(13) By the four-cell stage, chloroplasts of the rhizoid cells have weakly staining lamellae, while chloroplasts of the thallus cells are actively dividing with deeply staining lamellae.
(14) These observations are interpreted as evidence that the thallus of A. niger contains a mannose transferase that uses the phosphate of exo-methylene-hexahydropolyprenols as an acceptor.
(15) This study demonstrates that it is possible to select for more and more toxigenic strains or for less and less active ones starting with the same thallus.
(16) Bromoperoxidase I (which has been described before) was located inside the thallus, particularly around the conceptacles, whereas bromoperoxidase II was present at the thallus surface of the alga.
(17) Using fluorescein isothiocyanate-labeled lectins of various specificities, differences in the cell wall polysaccharide composition among the different parts of the thallus and during the cycle of S communis were demonstrated.
(18) We selected three mutant strains in which the constitutive activity of the protease messengers was expressed by an arrest of growth early in development (10 to 30 hours after spore germination) and a reaction of cell disintegration, in the thallus, suppressible with beta-phenyl pyruvic acid, a protease inhibitor.
(19) The enzyme activity is first detected in a few algae undergoing aplanosporogenesis and later in medullary hyphae that reach the dividing algae by elongating perpendicularly to the thallus surface.
(20) The thallus and life cycle of Neocallimastix R1 are compared with those of aerobic chytrids.
Vascular
Definition:
(a.) Consisting of, or containing, vessels as an essential part of a structure; full of vessels; specifically (Bot.), pertaining to, or containing, special ducts, or tubes, for the circulation of sap.
(a.) Operating by means of, or made up of an arrangement of, vessels; as, the vascular system in animals, including the arteries, veins, capillaries, lacteals, etc.
(a.) Of or pertaining to the vessels of animal and vegetable bodies; as, the vascular functions.
(a.) Of or pertaining to the higher division of plants, that is, the phaenogamous plants, all of which are vascular, in distinction from the cryptogams, which to a large extent are cellular only.
Example Sentences:
(1) Using mini-pigs with an indwelling vascular catheter, the pharmacokinetics of chloramphenicol were investigated in healthy and liver-damaged animals.
(2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(3) Peripheral vascular surgery has become an increasingly common mode of treatment in non-university, community hospitals in Sweden during the last decade.
(4) This study compared the non-invasive vascular profiles, coagulation tests, and rheological profiles of 46 consecutive cases of low-tension glaucoma with 69 similarly unselected cases of high-tension glaucoma and 47 age-matched controls.
(5) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(6) The present study examined whether the lack of chronic hemodynamic effects of ANP in control rats was due to changes in vascular reactivity to the peptide.
(7) Radioligand binding studies revealed the presence of a single class of high-affinity (Kd = 2-6 X 10(-10) M) binding sites for ET-1 in both cells, although the maximal binding capacity of cardiac receptor was about 6- to 12-fold greater than that of vascular receptor.
(8) After vascular injury, smooth muscle cells proliferate, reaching a maximum rate at day 2.
(9) Hexamethonium abolished vasodilatation in the hindquarters vascular bed only.
(10) The fibrous matrix and cartilage formed within the nonunion site transformed to osteoid and bone with increased vascularity.
(11) The operative arteriograms confirmed vascular occlusive phenomenon.
(12) An inverse relationship between the pumping capacity of the heart and vascular resistance was confirmed at different stages of examination and treatment of the patients.
(13) The capillary-adipocyte distances were shorter and the vascularization density was higher in old rats.
(14) When nifedipine was combined with ouabain the elevation of vascular resistance was completely abolished.
(15) A retrospective review was undertaken of 127 lower extremity fasciotomies performed for compartment syndrome after acute ischemia and revascularization in 73 patients with vascular trauma and 49 patients with arterial occlusive disease.
(16) It inhibits platelet and vascular smooth muscle activation by cGMP-dependent attenuation of the agonist-induced rise of intracellular free Ca2+.
(17) Base-line HPV was determined by measuring the change in pulmonary vascular resistance (PVR) while sheep breathed 12% O2 for 7 min.
(18) The chick chorioallantoic membrane (CAM) model was used to study vascular effects of photodynamic therapy (PDT) and hyperthermia (HPT) and the synergism of these modalities.
(19) For obstruction of greater than or equal to 50% of the pulmonary vascular cross-sectional area and pulmonary hypertension thrombolytic therapy should be given and insertion of an inferior caval filter can be considered.
(20) It is concluded that a Na-H antiport system in vascular smooth muscle regulates Na influx rate, contributes to intracellular pH regulation and influences basal levels of Na,K-pump activity.