(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.
Flex
Definition:
(v. t.) To bend; as, to flex the arm.
(n.) Flax.
Example Sentences:
(1) Failure was more likely with a subluxated, tilted, or excessively thick patella or flexed femoral component.
(2) Pharmacological actions on the nociceptive flexion flexes of the hindlimb were investigated in 14 normal subjects.
(3) But Wawrinka, who seemed to be flexing his knee a moment ago, is making more mistakes.
(4) With the whole spine flexed, muscle activity in the cervical erector spinae, trapezius and thoracic erector spinae muscles was higher than when the whole spine was straight and vertical.
(5) 'Squeeze' with the left hand followed by 'flex' with the right elbow.
(6) The infant, who was utterly small for his gestational age, showed an aberrant motoric pattern and a high forehead, low-set ears, a prominent occiput and scoliosis, an extension defect in the knee joints and flexed, ulnar-deviated wrists.
(7) This paper examined the mobility of intervertebral joints in axial rotation in a neutral and in two flexed positions.
(8) When the hair is maintained flexed its sensory neurone discharges tonically (Fig.
(9) The elongate and slim shape of the trunk provides great mass moments of inertia and that means stability against being flexed ventrally and dorsally by the forward and rearward movements of the heavy and long hindlimbs.
(10) On admission, his right hand and all of right fingers were flexed.
(11) These tendons pass dorsally from the median nerve through the carpal canal, where the nerve is subject to pressure when the tendons stretch whilst the wrist is flexed.
(12) For a nation that has begun to flex its military muscles, its presence on another world perfectly demonstrates its national prowess.
(13) An extended position proved to be more successful in demonstrating that finding than the flexed one.
(14) Blood pump diaphragms are required to be biocompatible and must be capable of long-term flexing without failure.
(15) As the earliest treatment the fixation of the shoulder joint in abduction and external rotation with flexed elbow on a splint as prevention of further stretch on the plexus and contractures seems to be the most important masure; later on a physio-therapy and mobilisation of the joints is of essential importance.
(16) At approximately 70% of the fracture load for the 90 degrees flexed knee, nearly 35% of the contact area was exposed to pressures greater than 25 MPa.
(17) A separation between the femur and the tibia of 1.3-3.8 mm was found in 3 knees which were slightly flexed during the traction.
(18) Cholesterol and stigmastanol are largely buried in the hydrocarbon part of the membrane, distinctly restricting the flexing motions of the fatty acyl chains whereas the conformation of the phospholipid headgroups is little affected.
(19) After ingesting even a small amount of sucrose, the fly begins making frequent, tight turns, flexes its front tarsi to bring more chemosensory hairs into contact with the substrate and repeatedly extends and retracts its proboscis.
(20) Another case confirmed that an abduction force on the flexed hip can produce anterior dislocation of the hip.