(n.) Any worm belonging to the Plathelminthes; also, sometimes applied to the planarians.
Example Sentences:
(1) New Guinea flatworms measure about 5cm long by 5mm wide.
(2) Rice fields that have abundant mosquito populations lack flatworms.
(3) Platydemus manokwari has a distant cousin, the New Zealand flatworm ( Arthurdendyus triangulatus ), which has triggered an invasive-species scare in western Europe.
(4) Three topics are dealt with in some detail: (1) the behavior of the insect vectors of such diseases as malaria and trypanosomiasis; (2) the intermediate hosts of helminths whose behavior is affected in such a way as to make them more susceptible to predation by the definitive host in the life cycle; and (3) the behavior and fecundity of molluscs infected with asexually reproducing parasitic flatworms.
(5) tetrodotoxin distribution in various tissues of the flatworm Planocera multitentaculata was examined.
(6) It was suggested from these findings that flatworms possess tetrodotoxin as a defense or alarm substance against predators.
(7) On the Mekong, Carlo noted rocks that were the natural habitat of tiny snails acting as intermediate hosts of the flatworm.
(8) The schistosome homeodomain sequences are more similar to the higher animals sequences in their respective classes than they are to each other, indicating that the establishment of these three distinctive classes is at least as ancient as the flatworms.
(9) "It is therefore important to consider the implementation of eradication and control of this flatworm."
(10) Although the flatworms and nemertean worms possess a pseudocoelom, a progressive differentiation of several leukocytic types occurred.
(11) The nature of sugar transport in schistosomes and other flatworms is similar to that in vertebrates.
(12) The warning is being sounded over a voracious species called the New Guinea flatworm.
(13) Carlo's work led to innovative approaches in the control of Schistosoma mekongi, a parasitic flatworm causing intestinal schistosomiasis, transmitted only on the river Mekong.
(14) These antisera give positive IR in more advanced flatworm species, indicating a later convergent evolution of vertebrate-like peptides within the phylum Platyhelminthes.
(15) The manner in which the flatworm, Hymenolepis diminuta (Cestoda), regulates the transport of glucose and Na+ across the brush border was examined.
(16) Intestinal protozoa, roundworms, and flatworms are considered with regard to pathogenic, potential and duration of infection.
(17) In flatworms, sensilla that penetrate the syncytial epidermis bear sensory processes derived from cilia.
(18) In this paper we report the discovery of a population in which such limb abnormalities appear to be caused by a parasitic flatworm (trematode) that uses amphibians as intermediate hosts.
(19) A variety of spontaneously active units was measured in the brain of the polyclad flatworm Freemania litoricola.
(20) A tetrodonic acid-like substance which was hardly distinguishable from authentic tetrodonic acid in thin-layer chromatography, high performance liquid chromatography, etc., was successfully purified from the ribbon worm and flatworm by a method consisting mainly of Bio-Gel P-2 column chromatography.
Helminth
Definition:
(n.) An intestinal worm, or wormlike intestinal parasite; one of the Helminthes.
Example Sentences:
(1) This preliminary study estimates the occurrence of concurrent helminth infection in Africa and Brazil to determine whether such an approach is justified epidemiologically.
(2) All four significantly affected helminth motor activity and were active at 200 and 150 micrograms ml-1, and three of the four were active at 100 and 50 micrograms ml-1.
(3) It is suggested that this early immune maturity may play a role in the hardiness of WAD goats and in their relative resistance to helminth and protozoan infection as compared with local sheep.
(4) The presence of helminthic invasion of the liver--opisthordiasis resulted in hepatitis, pancreatitis that would not respond to therapy in patients with ALMS.
(5) Halogenated anthelmintics were not metabolized to GSH conjugates in the helminths studied and did not inhibit GSH-S-aryltransferase activity towards chlorodinitrobenzene.
(6) The possibility that the activities observed may contribute to the elimination of peroxide in the helminth system is considered.
(7) Our results indicated that analyses of helminth communities of deer from this geographical area do not provide a useful quantification technique for determining deer condition, degree of hybridization, or levels of intraspecific competition.
(8) Much more fundamental information on helminth-bovine interactions, on helminth antigens, and on cattle antibody systems must be developed before progress on control of cattle helminths by vaccination can be meaningful.
(9) The predominant helminth was Ancylostoma duodenale, with the peak prevalence (65.2%) in patients older than 18 years, followed by Ascaris lumbricoides and Strongyloides stercoralis.
(10) Recently we described a mathematical model of the role of acquired immunity in host-helminth interactions.
(11) In addition, a number of antiparasitic agents have been shown to exert their actions through a free radical metabolism: nitro compounds used against trypanosomatids, anaerobic protozoa and helminths; crystal violet used in blood banks to prevent blood transmission of Chagas' disease; the antimalarial primaquine, chloroquinine, and quinhasou; and quinones active in vitro and in vivo against different parasites.
(12) Results of the infection of golden hamsters with different dozes of cercariae have shown that with the increase of dozes of infectious material the infection rate of helminths rises during the experimental intestinal schistosomiasis only to a definite level, which is attained by the injection of cercariae into the portal vein in dozes lower than those used for subcutaneous infection.
(13) Total parasitic helminth burdens, which were never large, were determined in order to define their seasonal incidence.
(14) Out of a total of 140 male and 114 female dogs sampled for gastro-intestinal helminth ova, 122 males (87.14%) and 101 females (88.59%) respectively were infested.
(15) Cuban mosquitoes are an important factor in the transmission of both viral and protozoal and helminthic diseases.
(16) A total of 91 free-ranging black bears (Ursus americanus) from the Peace River region of northwestern Alberta was examined for helminths.
(17) Levamisole and Banminth affected the motility of the helminth larvae with subsequent death after 24h.
(18) A significant association was also found between distance from a river and prevalence of S. haematobium (r = 0.94) and S. mansoni (r = 0.95) (P less than 0.01), but not with the other helminth infections.
(19) In addition to the known human pathogenic helminths H. nana and H. diminuta, localized foci of hookworms (Ancylostoma spp.)
(20) The observation, in parasitic protozoa and helminths, that selfing or non-obligatory mating is a common feature suggests that these processes may be strategies to overcome the cost of meiosis.