(n.) An insect belonging to the genus Pulex, of the order Aphaniptera. Fleas are destitute of wings, but have the power of leaping energetically. The bite is poisonous to most persons. The human flea (Pulex irritans), abundant in Europe, is rare in America, where the dog flea (P. canis) takes its place. See Aphaniptera, and Dog flea. See Illustration in Appendix.
Example Sentences:
(1) The combined immediate and delayed responses to fleas in the dog are as observed by other investigators in man and guinea pigs.
(2) Repellent effect of the Mannich bases (methoxyphenol derivatives) on Aedes aegypti mosquitoes and Xenopsylla cheopis fleas was revealed under laboratory and field conditions.
(3) Rats were caught, and they and their fleas were identified.
(4) Efficacy of polyvinyl chloride collars containing temephos [0,0'-(thiodi-4,1-phenylene) 0,0,0',0'-tetramethyl bis-(phosphorothioate)] was elevaluated in dogs and cats against the cat flea (Ctenocephalides felis).
(5) Thus, has been shown a leading role of transmission of plague microbe by fleas in the maintenance of natural nidality of this zoonosis.
(6) The results indicate that some cat-allergic patients have specific IgE both towards cat and cat flea but also that some of the patients with suspected cat allergy might have specific IgE towards the cat flea and not the cat.
(7) Over 60 forms of parasites were found out as follows: three species of blood parasites, 12 species of Coccidia, 8 species of cestodes, 12 species of nematodes, one species of Acanthocephalus, three species of chigger mites, 15 species of gamasid mites, 6 species of ixodid ticks, fleas and lice.
(8) Dissection of fleas gave, however, positive results.
(9) Hungry but previously "prepared" for winter fleas lived at a temperature from 0 to 2 degrees not more than 376 days.
(10) The 12 additional arthropod species recorded from the woodland mice consisted of 1 nidicolous beetle, Leptinus orientamericanus; 1 bot, Cuterebra fontinella; 3 fleas, Ctenophthalmus pseudagyrtes, Orchopeas leucopus and Peromyscopsylla scotti; 1 tick, Dermacentor variabilis; 2 mesostigmatid mites, Androlaelaps fahrenholzi and Ornithonyssus bacoti; 3 chiggers, Comatacarus americanus, Euschoengastia peromysci, and Leptotrombidium peromysci; and 1 undescribed pygmephorid mite of the genus Pygmephorus.
(11) He and bassist Flea wrote letters of support to the women, which have been given to them in prison.
(12) All these hosts carried a lower proportion of reproductive fleas than their monthly sample proportion.
(13) It was considered that Ctenocephalides canis could be of great public health significance in this area in view of the high population of the flea.
(14) Infection in humans or animals by the common tapeworm of dogs and cats (Dipylidium caninum) requires ingestion of the intermediate host, the dog or cat flea containing the larva (cysticercoids) of the agent.
(15) Rabbit fleas Spilopsyllus cuniculi (Dale) were present on both sexes of rabbit at all times of the year.
(16) The larval flea diet had a small effect on the subsequent cestode development and the adult fleas' reaction to it.
(17) Almost all the patients with HP who were studied show hypersensitivity to flea bites.
(18) However, if, after six days, the fleas were transferred from an environment of 18 degrees C to one at 24 degrees C or 30 degrees C, the rickettsial growth increased by two or three logs within one week.
(19) Following exposure, samples of flea eggs were processed for microscopic examination and seeded onto carpet swatches containing flea-rearing medium in order to assess egg hatch, and larval, pupal, and adult development.
(20) When the number of fleas was increased to 250 and 500 specimens the progeny decreased in number.
Lea
Definition:
(n.) A measure of yarn; for linen, 300 yards; for cotton, 120 yards; a lay.
(n.) A set of warp threads carried by a loop of the heddle.
(n.) A meadow or sward land; a grassy field.
Example Sentences:
(1) Furthermore, 75% of cases of intestinal metaplasia in gastric mucosa and 30% of tubular adenomas, 50% of villous adenomas and 70% of tubulovillous adenomas in the colon co-expressed Lea and Leb antigens.
(2) The Lea mRNAs belong to only two related groups of commonly regulated mRNAs.
(3) Immunoreactive neurons and terminals are scattered throughout all layers of LEA.
(4) Each of the Lea gene families probably contains two active homeologous genes (alloalleles), one in each of cotton's two subgenomes.
(5) Total cellular proteins from the livers of 4-, 16- and 52-week-old hepatitis- and hepatoma-predisposed Long-Evans Cinnamon (LEC) rats were compared to those from the livers of the corresponding control rats [Long-Evans Agouti (LEA) rats] by two-dimensional gel electrophoresis.
(6) In adenocarcinoma, Lea was expressed most remarkably.
(7) The frequencies of A, B, O, Lea, Jsa and K found in the children with severe malaria were similar to those previously reported for healthy adults in this population.
(8) This report provides detailed data on the expression of Lea and Leb in normal and neoplastic urothelium.
(9) UEA I showed a high affinity for the Lea glycolipid which has an alpha 1-4 linked fucose but not for the glycolipids with alpha 1-3 or alpha 1-2 linked fucose.
(10) To assess the immunomodulating effect of allergen entrapped in liposomes, Swiss strain mice (made IgE responders) were injected with either free allergen or liposome-entrapped allergen (LEA) and their immune response was measured in terms of specific IgG and specific IgE levels.
(11) The patients of the Lewis blood group phenotype of Lea (23%) had higher serum CA19-9, CA-50, and sialyl SSEA-1 than those of Leb (67%) and Le(-) (10%).
(12) and with lower affinity to the Lea blood group antigen itself.
(13) I have to say I think Iran are the poorest team I've seen so far – Nigeria were dreadful in that game but you got the sense that at leas they were a half-decent team playing badly.
(14) Since the Lewis substances show great structural similarity to the ABH blood group substances we compared the vWf concentration in individuals with and without the Lea antigen on the red cell surface.
(15) In addition, a minor component having the thin-layer chromatographic mobility of a ceramide nonasaccharide, which was reactive to anti-Lea antibody, was detected.
(16) The LEA had a sensitivity of 19%, a specificity of 86.7%, a positive predictive value (PPV) of 42.3% and a negative predictive value (NPV) of 67.6% in the prediction of a positive amniotic fluid culture (prevalence of positive cultures = 33.9%).
(17) This report summarizes an analysis of the incidence of LEAs during 1988 among Washington residents with and without diabetes.
(18) Thin-layer chromatography immunostaining of neutral glycolipids extracted from SLC cells reveals a 43-9F-reactive glycolipid whose carbohydrate structure, as determined by fast atom bombardment-mass spectrometry, is identical with that of an Lea-active pentaglycosylceramide described previously: Gal beta 1-3[Fuc alpha 1-4]-GlcNAc beta 1-3Gal beta 1-4Glc-Cer.
(19) Thus, in the normal colon, the absence of monosialosyl Lea (CA 19-9) in the presence of disialosyl Lea suggests that an alpha 2,6 sialyltransferase is active, which results in the masking of CA 19-9 antigen expression.
(20) The red blood cells of the group A infant of a group O central African Negro woman of the Zezuru tribe with anti-Lea and anti-JSb in her serum were found to be strongly agglutinated by a commerical antiglobulin reagent six days after birth.