(n.) Orig., a chicken; the young of a fowl; a young eaglet; a nestling; and hence, a feathered flying animal (see 2).
(n.) A warm-blooded, feathered vertebrate provided with wings. See Aves.
(n.) Specifically, among sportsmen, a game bird.
(n.) Fig.: A girl; a maiden.
(v. i.) To catch or shoot birds.
(v. i.) Hence: To seek for game or plunder; to thieve.
Example Sentences:
(1) The birds were maintained at a constant temperature in, dim green light.
(2) Unlike most birds of prey, which are territorial and fight each other over nesting and hunting grounds, the hen harrier nests close to other harriers.
(3) No vaccination reactions were noted, although most birds involved in the trials were carrying Mycoplasma spp.
(4) Precipitating antibodies were found in both lines; they first appeared 7 days after inoculation in P-line birds and 14 days after inoculation in N-line birds, but thereafter there was no difference between the two genetic lines.
(5) 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.
(6) Differences between parental and nonparental birds in VIP profiles were detected in the ventral portion of the infundibular region.
(7) The enterococcal population of the 'dosed' birds contained a greater proportion of Enterococcus faecium than did that of the control birds while the converse was true for Ent.
(8) Somewhat surprisingly then, in view of the mechanisms in mammals, birds do not seem to use this seasonal message in the photoperiodic control of reproduction.
(9) After 32 days of feeding, body weight, liver weight and egg production decreased in birds fed lead while kidney weights increased.
(10) Phyla as diverse as insects, birds, and mammals possess distinct HRAS and KRAS sequences, suggesting that these genes are essential to metazoa.
(11) Changes in brain size are compared with observations found in other domesticated birds.
(12) The presence in lamprey kidney of a loop which is similar to Henle's loop in mammals and birds indicates that the development of the system of osmotic concentration conditioned by the formation in the kidney of the medulla and from a sharp increase in renal arterial blood supply.
(13) We simply do whatever nature needs and will work with anyone that wants to help wildlife.” His views might come as a surprise to some of the RSPB’s 1.1 million members, who would have been persuaded by its original pledge “to discourage the wanton destruction of birds”; they would equally have been a surprise to the RSPB’s detractors in the shooting world.
(14) Water restriction of HYD birds for 5 days as adults stimulated tubule hypertrophy but not to the same extent as the chronic regimen and with no evidence for hyperplasia.
(15) Thus, the possibility exists that androgen secretion in some chelonian systems may exhibit a high degree of LH specificity like that of mammals and birds.
(16) 1 After the injection of labelled procaine and lidocaine in mice, the location and concentration of radioactivity was demonstrated by autoradiographical methods.2 An accumulation in some endocrine cells such as the pancreatic islets, the hypophysis, the adrenal medulla and certain cells of the thyroid (probably representing the calcitonin-producing parafollicular cells) was shown.3 After the injection of [(14)C]-procaine in chicks, an accumulation of radioactivity was observed in the ultimobranchial gland (which produces calcitonin in birds), but not in the thyroid.4 Radioactivity was also shown to be strongly concentrated in structures containing melanin, such as the pigment of the eye, skin and hair and in some organs involved in the metabolism and excretion of these drugs.
(17) Respiration frequency increased during exposure to 35 (four birds) and 40 degrees C (six birds) in the normally hydrated quail, while in the dehydrated quail, respiration frequency increased only in three birds during exposure to 35 degrees C, and four birds during exposure to 40 degrees C, the frequencies were lower during dehydration.
(18) A man in New Zealand suggested that they need to rid the country of cats to protect their native birds.
(19) Birds showed evidence of increased tolerance, with age, to phenylpropanolamine but not to monensin.
(20) Again, changes in birds fed CTN + OA for 7 days were similar but milder.
Shuttle
Definition:
(n.) An instrument used in weaving for passing or shooting the thread of the woof from one side of the cloth to the other between the threads of the warp.
(n.) The sliding thread holder in a sewing machine, which carries the lower thread through a loop of the upper thread, to make a lock stitch.
(n.) A shutter, as for a channel for molten metal.
(v. i.) To move backwards and forwards, like a shuttle.
Example Sentences:
(1) Transfer of the shuttle vectors from B. uniformis donors to E. coli occurred at the same frequencies when the matings were done aerobically or anaerobically.
(2) The effects of perinatal malnutrition on behavioural development and adult shuttle-box avoidance performance were studied in Swiss white mice.
(3) The chimeric shuttle vector was transformed into strain GS-5, and two transformants (TK15 and TK18) were isolated.
(4) The effect of angiotensin II (ATII) and of its interactions with dopaminergic drugs injected post-trial on retention in active avoidance tasks in shuttle-box-trained rats were studied.
(5) No effect was observed on the [6-3H]glucose half-life suggesting the dicarboxylic acid shuttle is unaffected by adrenalectomy; the Cori cycle is also not influenced.
(6) The implication that attenuation is due to the inhibition of energy transport via a PCr shuttle resulting in the decrease of ATP and accumulation of inhibitory levels of ADP distally has been supported by calculating sperm PCr and ATP levels resulting from diffusion along the flagellum.
(7) These results are consistent with data previously obtained by others in the supF shuttle vector system and the CHO aprt gene.
(8) The use of a new single long-terminal-repeat retroviral shuttle vector has allowed us to obtain copies of the Ld gene with the first seven exons spliced correctly, as well as many other partially spliced or aberrantly recombined copies.
(9) In addition, shuttle vectors that can be established both in Pseudomonas and Escherichia coli have been constructed by adding a pMB9 replicon.
(10) To gain insight into the mechanisms by which carcinogens induce mutations in human cells, we have been comparing the frequency and spectrum of mutations induced when a shuttle vector, pS189, carrying covalently bound residues of structurally related carcinogens, replicates in human 293 cells.
(11) A possible functional role for LDH isoenzyme X is proposed: the redox couple-2-oxo acid-2-hydroxy acid could integrate a shuttle system transferring reducing equivalents from cytoplasm to mitochondria.
(12) In contrast to these enzymes, the levels of cytoplasmic glycerol-3-phosphate dehydrogenase (cGPDH), the enzyme representative of the alpha-glycerophosphate shuttle, were higher (25%) in the type II fibres.
(13) In cells from hypothyroid animals, a 58% depression of glucose formation and 68% reduction in ureogenesis were induced by n-butylmalonate, an inhibitor of the malate shuttle.
(14) It has recently been shown that transport of electron opaque tracers can occur via the vesicular system, but the detailed ultrastructure is inconsistent with the transcytotic shuttling of single vesicles.
(15) The fragment mediates an increased level of methicillin resistance when inserted into a shuttle vector and transformed back into the sensitive strain generated when the original DNA was deleted.
(16) Rats were trained to perform shuttle responses to a buzzer in four different situations: pseudoconditioning or D test (buzzers and footshocks presented at random), classical conditioning or DP test (buzzers and footshocks paired on every trial), avoidance without stimulus pairing or DC test (buzzer-shock intervals varied at random, shocks contingent upon non-emission of a shuttle response to the preceding buzzer), and standard two-way avoidance or DPC test (buzzers paired to shocks, but the latter omitted every time there was shuttling to the buzzer).
(17) A Thermus-E. coli shuttle vector pYK109 was constructed.
(18) This shuttle may function at specific times to catalytically generate cytosolic NADP+ and in turn regulate enzymes limited by [NADP+].
(19) Lack of actin filaments around giant vacuoles in Schlemm's canal indicates that they do not play a role in shuttling aqueous across the endothelium of the canal.
(20) In addition, prenatal alcohol exposure produced a deficit in acquisition and performance of a shuttle-avoidance task.