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effect of oestradiol dipropionate on the immune system of the pigeon, columba livia.influence of female sex hormone, oestradiol dipropionate on the humoral and cell-mediated immune (cmi) responses of pigeon, columba livia of different age groups and of both sexes were studied. the pigeons were administered with the hormone, immunized with sheep red blood cells (srbc) and rosette forming cell (rfc), haemagglutinin (ha) and migration inhibition (mi) assays carried out on different days post-immunization. the hormone showed a differential effect: while the rfc and ha were enhanced ...19854085675
topographic representation of visceral target organs within the dorsal motor nucleus of the vagus nerve of the pigeon columba livia.our previous work (katz and karten, '83a j. comp. neurol. 217:31-46 demonstrated that the dorsal motor nucleus of the vagus nerve (dmn complex) in the pigeon is composed of cytoarchitecturally distinct subnuclei that are distinguished by the size, shape, position, and cytochemical characteristics of their constituent neurons. in view of the diversity of target organs innervated by the vagus nerve, we sought to determine whether the subnuclear heterogeneity of the dmn complex is related to the pa ...19854086668
[hexamitiasis in carrier pigeons in the netherlands].hexamitiasis in carrier pigeons caused by hexamita columbae was reported for the first time in the netherlands. infections tend to occur from april to july in 6-8 week old birds. the patients were affected with diarrhoea, became emaciated and died. mortality may be considerable. parasites may be identified in unstained wet specimens of very fresh droppings. treatment consists in administration of ronidazole during a period from seven to ten days. optimum hygiene should be observed.19854089854
normative data for pigeon vision.normative data are reported for the visual acuity, luminance-difference threshold and size-difference threshold of pigeons (columba livia). the mean visual acuity was 12.66 c/deg or 2.53 min (n = 54), the mean log luminance-difference threshold was 0.11 (n = 105) and the mean size-difference threshold was 0.94 mm (n = 20).19854090287
[adrenergic neuromuscular junctions in the cerebral arteries of birds].by means of the histochemical and electron microscopical methods, adrenergic innervation of the middle cerebral artery and its branches have been investigated in three sparrows (passer montanus), blue rock pigeons (columba livia), hens (gallus domestica), hazel-grouses (tetrastes bonasia), large billed crows (corvus levaillantii), ducks (anas domestica) and slaty backed gulls (larus schistisagus). neuromuscular connections in all the birds investigated have similar organizational features. some ...19854091667
[morphologic features of the adaptation of vessels of the renal glomerular complex of testudo horsfeldi gr. and columba livia].morphological characteristics on adaptive abilities of the glomerular complex vessels in kidneys of 35 tortoises (testudo horsfieldi) is presented under conditions of experimental alimentary dehydration and in intact kidneys of 29 pigeons (columba livia). appearance of transversal and circular anastomoses between the afferent and efferent arterioles of the glomeruli, as well as transformation of their capillaries into nutritional capillaries in the tortoise kidneys under the alimentary dehydrati ...19854091684
grasping in the pigeon (columba livia): final common path mechanisms.a combination of cinematographic and denervation procedures were used to analyse the mechanisms involved in the adjustment of gape size during grasping in the pigeon. gape size was found to vary directly with seed size and to reflect the operation of two variables, jaw opening velocity and jaw opening duration. effects upon duration are mediated, indirectly, by the effect of seed size upon head height, which, in turn, controls the velocity of head descent. the data suggest that the control of ga ...19854091959
histochemical detection of glycoproteins in the intestinal epithelium of columba livia.a histochemical investigation was carried out to detect glycoproteins in the epithelium of the small and large intestine, ceca and cloaca (coprodeum) of columba livia. the results showed that the goblet cells of both crypts and villi of the various segments studied presented neutral and acid glycoproteins. acid glycoproteins include sulphoglycoproteins and sialoglycoproteins with predominance of the sulphated components, particularly in the large intestine, ceca and coprodeum. in the striated bo ...19854096398
immunohistochemical localization of prolactin in the pituitary gland of the pigeon, columba livia. 19724118344
ependyma & sub-ependyma in the indian pigeon, columba livia & duckling, anas platyrhynchos. 19724118888
the effect of kc1, nac1, hydration and dehydration on the subcommissural organ of the domestic pigeon. 19674176814
tetrameres americana in laboratory pigeons (columba livia). 19694244904
effect of necrogenic doses of isoproterenol on the heart of the tench (tinca tinca--osteoichthyes), the frog (rana temporaria--anura) and the pigeon (columba livia--aves). 19714261967
effect of acth on the hypothalamic neurosecretion of the pigeon (columba livia domestica l.). 19664285912
effect of thirst and water load on the hypothalamic regulation of the adrenal in the pigeon (columba livia domestica l.). 19664290846
effect of the median eminence of the pigeon (columba livia domestica l.) on the regulation of adenohypophysial corticotropin secretion. 19694307269
effect of different experimental interventions on the amount of acth in the median eminence of the domestic pigeon. 19694317327
an analysis of the crop contents of white carneaux pigeons (columba livia), days one through twenty-seven. 19714322783
studies on a "renin-angiotensin" system in the normal and hypophysectomized pigeon (columba livia). 19714323879
the effects of hypophysectomy on the metabolism of adrenal steroids in the pigeon (columba livia). 19724336117
sleep in the domestic pigeon (columba livia). 19724339457
[enzyme histochemical and fine structural observations on the pecten oculi of the pigeon (columba livia) and laughing gull (larus ridibundus)]. 19724343361
effects of hyper- and hypofunctional states on the zonation of, and in vitro corticosterone production by the adrenocortical tissue in the domestic pigeon. 19724345075
effect of ether stress on crf-acth system of the domestic pigeon. 19724345076
rhythmic and light-induced changes in levels of pineal 5-hydroxyindoles in the pigeon (columba livia). 19664381448
a comparative study of the peroxidases from thyroid glands of pigeon (columba livia domestica) and common myna (acridotheres tristis). 19714400978
the effects of dietary protein content on water requirements and ammonia excretion in pigeons, columba livia. 19724404574
[the relationship between the so-called voice break and the daily ketosteroid excretion in young pigeons (columba livia domestica)]. 19744411204
mercury residues in the common pigeon (columba livia) from the jackson, mississippi, area--1972. 19744444928
nerves and nerve terminations in the heart of columba livia. 19744451283
chromosome homology in birds: banding patterns of the chromosomes of the domestic chicken, ring-necked dove, and domestic pigeon. 19744462977
mechanism of action of alpha-chlorohydrin on testes of the domestic pigeon : a confirmation. 19744464268
brain mechanisms and feeding behavior in the pigeon (columba livia). ii. analysis of feeding behavior deficits after lesions of quinto-frontal structures. 19734520143
polymorphism and the evolution of a continuous breeding season in the pigeon, columba livia. 19734522401
ontogeny and localization of -crystallin antigen in the developing pigeon (columba livia) lens. 19724560839
[importance of domestic pigeons in human salmonellosis]. 19724563870
heart rate and blood pressure responses to electrical stimulation of the central nervous system in the pigeon (columba livia). 19734579121
ultrastructural and acetylcholinesterase investigations on the pancreas intrinsic innervation of two bird species (columba livia domestica gm. and euodice cantans gm.). 19744618821
ultrastructure of the avian retina. an anatomical study of the retina of the domestic pigeon (columba liva) with particular reference to the distribution of mitochondria. 19724640866
[the detection of the domestic pigeon mallophagan bonomiella columbae for the first time in gdr]. 19724666504
the organization and projections of the paleostriatal complex in the pigeon (columba livia). 19734698909
daily rhythms of plasma corticosterone in the common pigeon, columba livia. 19734699365
nonvisual photic responsiveness in newly hatched pigeons (columba livia).overt behavioral arousal was elicited by light stimulation in pigeon hatchlings. the sensitivity is not mediated via the retina or by direct stimulation of the brain, but rather it is most likely a dermal sensitivity.19734702573
opponent-color units in the thalamus of the pigeon (columba livia). 19734719087
neural connections of the "visual wulst" of the avian telencephalon. experimental studies in the piegon (columba livia) and owl (speotyto cunicularia). 19734721779
connections of the anterior commissure in the pigeon (columba livia). 19734723065
de lange characteristics for the fresh-water turtle chrysemys picta picta, and the pigeon columba livia. 19734746984
serotypes in saccharomyces telluris: their relation to source of isolation.three serotypes have been characterized with three reference strains of saccharomyces telluris and designated as a, b, and c. one reference strain of torpulopsis bovina, the imperfect form of s. telluris, belonged to serotype b. strains (141) of s. telluris isolated from four columbid species were serotyped. all 98 strains of this yeast isolated from columba livia (feral pigeon) belonged to serotype b. three other columbid species, c. leucocephala (white-crowned pigeon), c. fasciata (band-tailed ...19734762113
brain mechanisms and feeding behavior in the pigeon (columba livia). i. quinto-frontal structures. 19734765854
[new data on visual projections in the pigeon (columba livia)]. 19734770387
injurious effect of cadmium on testis of domestic pigeon & its prevention by zinc. 19734782372
comparison of differential reinforcement of low rates (drl) performance in pigeons (columba livia) and crows (corvus brachyrhynchos). 19744823247
thalamic organization of the retino-thalamo-hyperstriatal pathway in the pigeon (columba livia). 19744827866
[ultrastructural and functional studies of the pineal organ in the pigeon (columba livia)]. 19694902166
[studies on types of salmonella typhimurium in domestic pigeons in schleswig-holstein and their possible epizootological significance]. 19714935401
[treatment attemts of a massive salmonella typhimurium infection in flock of army carrier pigeons]. 19714950674
[the cerebral ventricles of the fowl (gallus domesticus), pigeon (columba livia) and duck (anas boschas domestica) demonstrated with the help of the plastic corrosion technique]. 19674970158
neurohypophysial hormones and sexual behavior in males of the domestic fowl (gallus domesticus l.) and the pigeon (columba livia gmel.). 19725009669
a polygraphic and behavioral study of sleep in the pigeon (columba livia). 19725026409
formation and utilization of acetoacetate and d-3-hydroxybutyrate by various tissues of the adult pigeon (columba livia). 19725075781
localization of visual structure in the diencephalon of pigeon (columba livia). 19725079258
effect of hygromycin-b on pigeons (columba livia) with and without trichomonas gallinae. 19725079869
effect of thyroidectomy & exogenous thyroxine on hypothalamo-hypophysial complex & gonads of indian pigeon, columba livia gmelin. 19715092726
naturally occurring clinical newcastle disease in the racing pigeon (columba livia). 19715106215
grass and subcellular distribution of cesium-137 in pigeon (columba livia) tissues with special reference to muscles. 19715150019
effect of malonate, succinate and glucose, in vivo, on the uptake of cesium-137 by pigeon (columba livia) muscles. 19715150020
effects of oestrogen on the differentiation of some reproductive behaviours in male pigeons (columba livia). 19715150475
the distribution of mallophaga on the domestic pigeon (columba livia). 19715161201
electrophysiology of contralateral and ipsilateral visual projections to the wulst in pigeon (columba livia). 19715161304
the endocrine basis of breeding behaviour in the feral pigeon (columba livia). i. effects of exogenous hormones on the pre-incubation behaviour of intact males. 19695349579
hormonal control of courtship behaviour in the pigeon (columba livia). 19695370958
on a new species of the genus paronchocerca from rock pigeon columba livia. 19695393021
[a new trichostrongylide, parasite of the domestic pigeon in senegal]. 19695408493
telencephalic projections of the nucleus rotundus in the pigeon (columba livia). 19705459211
the effects of wulst ablations on color, brightness and pattern discrimination in pigeons (columba livia). 19705459214
[ultrastructure of the median eminence of the pigeon (columba livia domestica) in various experimental conditions]. 19705495352
locomotor activity rhythms in homing pigeons (columba livia). 19705498036
hygromycin-b induction of trichomoniasis in pigeons (columba livia). 19705503015
[on factors limiting the resistance to fatigue in the racing pigeon (columba livia gm.). ii. changes caused by dehydration in the blood protein pattern of the racing pigeon]. 19705517479
[on factors limiting the resistance to fatigue in the racing pigeon (columba livia gm.). i. hematocrit changes (pcv) caused by lack of water and by the contest]. 19705517487
the spectral sensitivity of single units in the nucleus rotundus of pigeon, columba livia.responses to diffuse monochromatic light were recorded from single units in the diencephalon of pigeon. units were both excited and inhibited by light stimulation. intensity-response functions based on latency measures to the first spike after stimulation were used to generate action spectra. one class of spectral sensitivity functions presumably from rods, showed peak sensitivities near 500 nm: these functions were unaffected by changing criterion values used to generate the functions. a second ...19715544800
the immune response of the pigeon (columba livia). 19715545143
[bilateral asymmetry of the long bones of the extremities of the pigeon columba livia and the parrott amazona amazonica]. 19675586166
the effect of reserpine on the female reproductive system of the domestic pigeon. 19685709547
[thalidomide and evolution of osseous callus in relation to folliculin treatments. radiological observations in columba livia gm]. 19685719781
two types of optomotor response in the domestic pigeon. 19685722039
the ascending auditory pathway in the pigeon (columba livia). ii. telencephalic projections of the nucleus ovoidalis thalami. 19685749228
a new species of philophthalmus (trematoda: philophthalmidae) from the orbital cavity of the pigeon, columba livia (gmelin) in india. 19685753413
sensory corpuscles in the beak skin of the domestic pigeon. 19695802135
a specific visual projection area in the hyperstriatum of the pigeon (columba livia). 19695807769
a new species of cotugnia (cestoda davaineidae) from the domestic pigeon in india. 19695814150
influence of hyperthyreoidization on the pigmentation of some phenotypes of the domestic pigeon. 19655858962
the spectral sensitivity of the pigeon (columba livia). 19655862758
the occurrence of psittacosis virus complement-fixing (cf), noncomplement-fixing (ncf) and neutralizing (n) antibodies in domestic pigeons. 19655892276
[influence of thalidomide on the evolution of the osseous callus and endosteal ossification in columba livia gm]. 19665972608
[microscopic and histochemical studies on the kidney of columba livia aberratio domestica l]. 19665988094
[experimental ascariasis in the pigeon (columba livia) caused by ascaridia columbae (gmelin 1790): research on the capacity of the larvae of ascaridia columbae exposed, in the embryonated egg stage, to various levels of ionizing radiations (10000 r-20000 r-40000 r of co 60), to develop to adult helminths]. 19665999035
dna replication patterns of the sex chromosomes of the pigeon (columba livia domestica). 19666006218
tetrameres sp. (nematoda: spiruridae) found in pigeons (columba livia) in kansas and oklahoma. 19676069467
the organization of the ascending auditory pathway in the pigeon (columba livia). i. diencephalic projections of the inferior colliculus (nucleus mesencephali lateralis, pars dorsalis). 19676076249
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