(1) Electron microscopy has revealed that chitin from a representative selection of insect orders (plus one crustacean and one arachnid) is localized in crystallites about 2.8 nm across.
(2) Necrotic arachnidism was seen only in areas where populations of Tegenaria agrestis spiders were well established and did not occur where Tegenaria agrestis was absent.
(3) The variable sensibility of the spiders towards an equal amount of hormones allows us to confirm the occurrence of winter-diapause in this Arachnid.
(4) Camel Spiders Photograph: James Mccauley Focusing on the Solifugae arachnid rather than the far scarier camel-spider hybrid I first pictured, Camel Spiders is the latest film from Jim Wynorski, director of Busty Cops Go Hawaiian, The Wasp Woman and Dinocroc Vs Supergator.
(5) It was concluded that collagenase is a major factor in the aetiology of necrotic arachnidism.
(6) The geographical spread of Tegenaria agrestis spiders parallels the appearance of necrotic arachnidism in several areas.
(7) These intramembranous particle rows are novel structural modifications, called here 'linker' junctions, and are quite distinct from conventional tight or septate junctions found between the outer glial cells in more highly evolved arthropods such as the insects and arachnids.
(8) His Spider design is particularly fun, coming from "the interpretation of the ultimate heavy metal instrument through the lens of arachnids".
(9) There is an association of cytoskeletal components with these septate, linker, and tight junctions; the role of the cytoskeleton in tight junctions, which can be seen by freeze fracture to be based on simple ridges in insects or a more complex network of them in arachnids, may also be important in the regulation of paracellular permeability.
(10) Cross says that these arachnids, also known as vampire spiders, “love” feeding on human blood as it gives them an odour that renders them sexually attractive to potential mates.
(11) Guanine is the major nitrogenous waste product in arachnids.
(12) Ivermectin is a macrocyclic lactone (fermentation) product and actinomycete (Streptomyces avermitilis) that possesses an unusually broad spectrum of potent activity against several species of nematodes, arachnids, and insects that parasitize domestic animals.
(13) Necrotizing dermatitis, or arachnidism, is a new life-threatening syndrome of which many clinicians are unaware.
(14) A comparative analysis of cardiotropic activity of toxins has been studied in experiments on isolated heart of the poisonous animals from different systematic groups living on the territory of the USSR: reptiles (the venom of cobra, Vipera lebetina, Ancistrodon blomhoffi), amphibian (the venom of Bufo, Bombina, salamander), arachnids (the venom of Apis, Scolopendra, scorpion).
(15) Such a system is unknown in insects or crustaceans, but may be typical for arachnids.
(16) Similar to the heavily armoured arachnid seen in the E3 demo, it takes multiple hits to bring down, and coordinating fire from the three team members is crucial.
(17) Although they are very common arachnids, the scorpions (Euscorpius, sp.)
(18) Absorption spectra of visual screening pigments obtained in vitro with a microspectrophotometer using frozen sections are given for the insects Musca domestica, Phormia regina, Libellula luctuosa, Apis mellifera (worker honeybee only), Drosophila melanogaster (wild type only) and the arachnids Lycosa baltimoriana and Lycosa miami.
(19) Arachnidism can be manifested either through the skin or systemically.
(20) Since guanine is not only an essential constituent of vital nucleic acids, but also the main end product of nitrogenous waste excretion in arachnids, it is a potential candidate for a hygienic index for mite activity in house dust.
Arachnoid
Definition:
(a.) Resembling a spider's web; cobweblike.
(a.) Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.
(a.) Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.
(n.) The arachnoid membrane.
(n.) One of the Arachnoidea.
Example Sentences:
(1) Diagnostic work-up and management of intracranial arachnoid cysts are still controversial.
(2) Seventy-eight patients presented optochiasmal arachnoiditis: 12 had trigeminal neuralgia; 1, arachnoiditis of the cerebellopontile angle; 6, arachnoiditis of the convex surface of the brain; and 3, the hypertensive hydrocephalic syndrome due to occlusion of the CSF routes.
(3) Within the arachnoid mater the immunoreactivity was concentrated in the basal zone of the arachnoid membrane, thus appearing as a narrow fluorescent band near the border of the dura.
(4) True arachnoid cysts of the suprasellar region are uncommon and have rarely been diagnosed pre-operatively.
(5) Four mechanisms for the formation of ectopic meningioma have been suggested: (a) direct extension of an intracranial lesion; (b) distant metastasis from an intracranial meningioma; (c) origin from arachnoid cells within the sheaths of cranial nerves; and (d) origin from embryonic nests of arachnoid cells.
(6) A series is reported of 9 cases of supratentorial arachnoid cysts in children under the age of 14 years.
(7) The second patient had optic nerve involvement as well as two intracranial parenchymal lesions and granulomatous arachnoiditis.
(8) The association of an arachnoidal cyst in the middle cranial fossa with a subdural haematoma or intracystic bleeding is emphasised.
(9) In addition, it proposes a modification of the standard dural closure that may reduce the incidence of contributory adhesive arachnoiditis by the creation of a capacious cerebrospinal fluid space about the neural plaque.
(10) Subarachnoid alumina may be a good model for human arachnoiditis.
(11) The delayed appearance of syringomyelia after a severe single spinal trauma resulting in contusion of the spinal cord without the complication of arachnoiditis is a more recent issue, but is now well-known.
(12) Many thousands of arachnoid villi subtend all the membranes from the intrathecal space, and many of these end in the large epidural veins.
(13) SSFP MR images helped markedly in diagnosis of hemorrhagic, epidermoid, and arachnoid cysts.
(14) The main causes are Potts Disease, arachnoiditis, tropical spastic paraplegia, trauma, lathyrism and cord compression.
(15) The author evaluates the dynamics of immune reactivity of the body in patients with cerebral arachnoiditis with consideration of main clinical syndrome--hypertensive-hydrocephalic, epileptiform, autonomic-vascular dystonia syndromes in different variants of the course of the process.
(16) This observation relates a case of spinal arachnoiditis with paraplegia, for a 56 year old patient hospitalized for a S.A.H.
(17) These findings suggest alternative drainage pathways for CSF besides the arachnoid villi (Pacchionian bodies) including connections with lymphatics in the neck and along the olfactory nerve, and around the cribiform plate to the nasal submucosa, and with proptosis, perhaps also through the aqueous humor-canal of Schlemm and nasolacrimal duct.
(18) Gross morphological features of cystic larvae, complex arachnoid cysts, granulomatous abscesses, basal meningitis and mineralised nodules correlated closely with the images obtained, especially on MR, where resolution permitted visualisation of larval protoscolices.
(19) CT scan demonstrated an arachnoid cyst in the left Sylvian fissure.
(20) The authors report long-term results in 17 patients with surgically treated congenital intradural spinal arachnoid cysts.