(1) Similar experimental manipulation has yielded in vitro lines established from avian B-cell lymphomas expressing elevated levels of c-myc or v-rel.
(2) We have constructed retroviral vectors derived from the genome of avian erythroblastosis virus ES4 (AEV ES4).
(3) It is the smallest avian tumor virus RNA detected to date.
(4) Globin cDNA was used as the template for the synthesis of a complementary strand (ccDNA) by avian myeloblastosis virus DNA polymerase.
(5) The v-erb A oncogene of avian erythroblastosis virus is a mutated and virally transduced copy of a host cell gene encoding a thyroid hormone receptor.
(6) The results indicate that, regardless of the photoperiod, no clear functional relationship can be found between the avian pineal gland and thyroid function, although a transitory increase in T4 levels was seen in both pinealectomized and sham-operated birds shortly after the operations.
(7) An enzyme-linked immunosorbent assay (ELISA) was developed for detecting antibody to type A avian influenza (AI) virus.
(8) The identification of the viral oncogene v-erbA carried by an avian leukemia retrovirus has directly demonstrated the involvement of hormone receptors in neoplastic transformation.
(9) Thirty (90.9%) strains were lysed by avian phages: 28 strains at 1 x RTD and 2 at 100 x RTD.
(10) Results of tests on 4 mammalian, 19 reptilian, and 17 avian species confirmed the prediction that lack of optomotor response to monocular optokinetic stimulation in one of the two horizontal directions would correlate with afoveate retinal organization, whereas consistent optomotor responses to monocular stimulation in either horizontal direction would correlate with foveate organization.
(11) It is suggested that lung ventilation takes place in the avian embryo in three distinct stages: the major air-ways become aerated, then respiratory movements begin and lastly the tertiary bronchi are slowly aerated.
(12) This was achieved by means of postal questionnaires, coupled with the biochemical and serological examination of bacterial isolates from 91 outbreaks in poultry and from nine cases in other avian species.
(13) Representative specimens from two classes of Vertebrata Sub-Phyllum, Bufo paracnemis (amphibian) and Gallus domesticus (avian) were made anemic by phenylhydrazine treatment.
(14) Controlled contact studies demonstrated that tumorigenesis in a line of isolator-derived, barrier-sustained, specific pathogen-free chickens requires exposure to both the Marek's disease herpesvirus and an avian leukosis virus, Rous-associated virus, type 2.
(15) We have constructed avian retroviruses expressing the human c-myc oncogene.
(16) We have identified unconjugated ubiquitin as a component of avian leukosis virus (ALV).
(17) Molecular hybridization experiments to cytoplasmic RNA from similarly contact-exposed conventional Cornell S-line chickens provided further evidence for the occurrence of an interaction between Marek's disease herpesvirus and the avian leukosis virus.
(18) In vivo-derived avian erythroblastosis virus (AEV)-transformed erythroleukemia cells expressed type 2A molecules.
(19) The enzyme activity was completely neutralized by anti-REV DNA polymerase antibody but not by anti-avian myeloblastosis virus DNA polymerase antibody.
(20) The avian blood fluke, Austrobilharzia terrigalensis (Trematoda: Schistosomatidae), is recorded in Western Australia for the first time, and is implicated as the cause of dermatitis among users of the Swan estuary in Perth.
Ornithology
Definition:
(n.) That branch of zoology which treats of the natural history of birds and their classification.
(n.) A treatise or book on this science.
Example Sentences:
(1) Later, while spending weekends practicing falconry at Blow’s country estate, McQueen relished the contrast with his early foray into ornithology.
(2) The British Trust for Ornithology said recent research had shown a "hungry gap" when farmland birds were finding it hard to find seed in the two months after farmers began to plough their fields in mid February.
(3) In addition to a number of oecological and ornithological considerations, reference was also made to systematic facts and routes along which further investigations on the presence of influenza viruses in the world of birds could be taken up, particular attention being paid to migratory birds.
(4) The report drew heavily on the British Trust for Ornithology's mammoth volunteer-led project the Bird Atlas 2007-11 , published a month earlier.
(5) Malick's obsession with ornithology is well known to admirers of his films, which often include lyrical passages that cut away from the central dramatic action to focus on swaying grasses and wildlife.
(6) Mário Rego (+351 966 302 853) is a lovely guide and specialises in Terceira’s rich ornithology and geology.
(7) The presence of hemagglutination-inhibiting antibodies to tick-borne encephalitis virus was investigated in serum samples from domestic animals (217 from swine, 214 from cattle, 179 from goats and 161 from sheep) and birds (214 from geese and 171 from ducks), as well as from 511 apparently healthy subjects of a biotope with particular ornithological and entomological characteristics.
(8) Thus an extraordinary chapter in the history of radio broadcasting – and ornithology – finally reached its end.
(9) Later still, he joined the Actors Theatre of Louisville, and drifted through a year at university studying, he says, 'Italian, ornithology and writing.'
(10) While one of his brothers manages the American Express office in town and another trades in Switzerland, Mohamed has stayed close to the Nile and developed a passion for ornithology.
(11) The song Feed the Birds has nothing to do with ornithology: it's about how it doesn't take much to give love.
(12) According to the British Trust for Ornithology , if current population trends continue, it is highly likely that some of these birds will not just decline in numbers, but may disappear from Britain altogether.
(13) Ornithology aside, Arnold was ever the stoker of embers, saying that Barbarouses should have been sent off for a first-half challenge.
(14) Lyster and Chris were fitted with the satellite tags last May by scientists from the British Trust for Ornithology (BTO).