R. Keeler

发表

Effects of veratrum alkaloids on membrane potential and conductance of squid and crayfish giant axons.

M. Ota, T. Narahashi, R. Keeler, 1973, The Journal of pharmacology and experimental therapeutics.

Congenital deformities in swine induced by wild tree tobacco, Nicotiana glauca.

R. Keeler, M. Crowe, 1983, Journal of toxicology. Clinical toxicology.

Teratogenicity in swine of the tobacco alkaloid anabasine isolated from Nicotiana glauca.

R. Keeler, E. A. Lambert, M. Crowe, 1984, Teratology.

Congenital deformities produced in hamsters by potato sprouts.

R. Keeler, S. Young, D. Brown, 1978, Teratology.

Teratogenic compounds of veratrum californicum (durand) - VI

R. Keeler, Richard F. Keeler, 1969 .

Effects of alkaloids of Veratrum californicum on chick embryos.

R. Keeler, M. Bryden, C. Perry, 1973, Teratology.

Mechanism of Death in Syrian Hamsters Gavaged Potato Sprout Material

R. Keeler, D. Baker, William P. Gaffield, 1988, Toxicologic pathology.

Comparison of the teratogenicity in rats of certain potato-type alkaloids and the veratrum teratogen cyclopamine.

R. Keeler, 1973, Lancet.

Failure of Blighted Russet Burbank Potatoes to Produce Congenital Deformities in Rats

R. Keeler, G. Stallknecht, D. Douglas, 1974, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Teratogenicity of the solatium alkaloid solasodine and of ‘Kennebec’ potato sprouts in hamsters

D. Brown, R. Keeler, S. Young, 1976, Bulletin of environmental contamination and toxicology.

Structure-activity relation of steroid teratogens. 3. Solanidan epimers.

R. Keeler, D. Brown, 1978, Journal of agricultural and food chemistry.

Structure-activity relation of steroid teratogens. I. Jervine ring system.

R. Keeler, D. Brown, 1978, Journal of agricultural and food chemistry.

Tungstate as an antagonist of molybdate in Azotobacter vinelandii.

J. Varner, R. Keeler, Joseph E. Varner, 1957, Archives of biochemistry and biophysics.

ANTIGENIC AND RELATED BIOCHEMICAL PROPERTIES OF LISTERIA MONOCYTOGENES I

R. Keeler, M. L. Gray, 1960, Journal of bacteriology.

Chronologic evaluation of teratogenicity in sheep fed Veratrum californicum.

R. Keeler, W. Binns, L. James, 1965, Journal of the American Veterinary Medical Association.

Teratogenic compounds of Veratrum californicum (Durand) X. Cyclopia in rabbits produced by cyclopamine.

R. Keeler, 1970, Teratology.

Myopathy in cattle induced by alkaloid extracts from Thermopsis montanta, Laburnum anagyroides and a Lupinus sp.

R. Keeler, D. Baker, 1990, Journal of comparative pathology.

Expression of Veratrum alkaloid teratogenicity in the mouse.

R. Keeler, L. Harne, K. Brown, 1990, Teratology.

Teratogenic compounds of Veratrum californicum (Durand). 13. Structure of muldamine.

R. Keeler, 1971, Steroids.

Teratogenic compounds of Veratrum californicum (Durand). V. Comparison of cyclopian effects of steroidal alkaloids from the plant and structurally related compounds from other sources.

R. Keeler, W. Binns, 1968, Teratology.

Teratogenic compounds of Veratrum californicum (Durand). I. Preparation and characterization of fractions and alkaloids for biologic testing.

R. Keeler, W. Binns, 1966, Canadian journal of biochemistry.

Spirosolane-containing Solanum species and induction of congenital craniofacial malformations.

R. Keeler, William Gaffield, D. Baker, 1990, Toxicon : official journal of the International Society on Toxinology.

Lesions of potato sprout and extracted potato sprout alkaloid toxicity in Syrian hamsters.

R. Keeler, William Gaffield, D. Baker, 1988, Journal of toxicology. Clinical toxicology.

Toxic and teratogenic alkaloids of western range plants

R. Keeler, 1969 .

Concentration of galegine in Verbesina encelioides and Galega oficinalis and the toxic and pathologic effects induced by the plants.

R. Keeler, K. Panter, D. Baker, 1992, Journal of environmental pathology, toxicology and oncology : official organ of the International Society for Environmental Toxicology and Cancer.

Pathophysiologic effects of an aqueous extract of black walnut (Juglans nigra) when administered via nasogastric tube to the horse.

A. R. Twardock, R. Keeler, E. Bailey, 1992 .

Impact of plant toxins on fetal and neonatal development: a review.

T. Bunch, R. Keeler, K. Panter, 1992 .

Conium, Lupinus, and Nicotiana alkaloids: fetal effects and the potential for residues in milk.

R. Keeler, K. Panter, 1990, Veterinary and human toxicology.

Thermopsis montana-induced myopathy in calves.

R. Keeler, D. Baker, 1989, Journal of the American Veterinary Medical Association.

Toxicoses in livestock from the hemlocks (Conium and Cicuta spp.).

R. Keeler, K. Panter, D. Baker, 1988, Journal of animal science.

Toxicity of Thermopsis montana in cattle.

R. Keeler, A. Johnson, R. Chase, 1986, The Cornell veterinarian.

Induction of cleft palate in newborn pigs by maternal ingestion of poison hemlock (Conium maculatum).

R. Keeler, K. Panter, W. Buck, 1985, American journal of veterinary research.

Congenital tracheal stenosis in lambs induced by maternal ingestion of Veratrum californicum.

R. Keeler, S. Young, R. Smart, 1985, Teratology.

Teratogens in plants.

R. Keeler, 1984, Journal of Animal Science.

Teratogenicity and toxicity of wild tree tobacco, Nicotiana glauca in sheep.

R. Keeler, M. Crowe, 1984, The Cornell veterinarian.

Toxicity and teratogenicity of Conium maculatum in swine

R. Keeler, K. Panter, W. Buck, 1983 .

Nicotiana glauca-induced congenital deformities in calves: clinical and pathologic aspects.

R. Keeler, M. Crowe, J. L. Shupe, 1981, American Journal of Veterinary Research.

Absence of arthrogryposis in newborn Hampshire pigs from sows ingesting toxic levels of jimsonweed during gestation.

R. Keeler, 1981, Veterinary and human toxicology.

Teratogenicity and toxicity of coniine in cows, ewes, and mares.

R. Keeler, M. Crowe, J. L. Shupe, 1980, The Cornell veterinarian.

Effects on sheep of the milkweeds Asclepias eriocarpa and A. labriformis and of cardiac glycoside-containing derivative material.

J. Seiber, R. Keeler, S. Young, 1979, Toxicon.

ALKALOID TERATOGENS FROM LUPINUS, CONIUM, VERATRUM, AND RELATED GENERA

R. Keeler, 1978 .

Teratogenic effects in cattle of Conium maculatum and conium alkaloids and analogs.

R. Keeler, L. Balls, 1978, Clinical toxicology.

Coniine, a teratogenic principle from Conium maculatum producing congenital malformations in calves.

R. Keeler, 1974, Clinical toxicology.

Congenital deformities in lambs, calves, and goats resulting from maternal ingestion of Veratrum californicum: hare lip, cleft palate, ataxia, and hypoplasia of metacarpal and metatarsal bones.

R. Keeler, W. Binns, L. Balls, 1972, Clinical toxicology.

Known and suspected teratogenic hazards in range plants.

R. Keeler, 1972, Clinical toxicology.

Sequence in the abortive and teratogenic effects of locoweed fed to sheep.

R. Keeler, W. Binns, L. James, 1969, American journal of veterinary research.

Lupine, a cause of crooked calf disease.

R. Keeler, W. Binns, L. James, 1967, Journal of the American Veterinary Medical Association.

Congenital skeletal malformations and cleft palate induced in goats by ingestion of Lupinus, Conium and Nicotiana species.

T. Bunch, R. Keeler, K. Panter, 1990, Toxicon : official journal of the International Society on Toxinology.

Maternal and fetal toxicity of poison hemlock (Conium maculatum) in sheep.

T. Bunch, R. Keeler, K. Panter, 1988, American journal of veterinary research.

Congenital skeletal malformations induced by maternal ingestion of Conium maculatum (poison hemlock) in newborn pigs.

R. Keeler, K. Panter, W. Buck, 1985, American Journal of Veterinary Research.

Effects of poisonous plants on livestock

R. Keeler, L. James, K. Kampen, 1978 .

STUDIES ON THE TOXIC PRINCIPLE OF Asclepias eriocarpa AND Asclepias labriformis

J. Seiber, R. Keeler, J. Benson, 1978 .

Lupin alkaloids from teratogenic and nonteratogenic lupins. I. Correlation of crooked calf disease incidence with alkaloid distribution determined by gas chromatography.

R. Keeler, 1973, Teratology.

Abortive and teratogenic effects of locoweed on sheep and cattle.

R. Keeler, W. Binns, L. James, 1967, American journal of veterinary research.

Nutritional muscular dystrophy in lambs--selenium analysis of maternal, fetal, and juvenile tissues.

R. Keeler, S. Young, K. Swingle, 1962, American journal of veterinary research.

Cyclopamine and related steroidal alkaloid teratogens: Their occurrence, structural relationship, and biologic effects

R. Keeler, 1978, Lipids.

Steroidal Alkaloid Teratogens: Molecular Probes for Investigation of Craniofacial Malformations

R. Keeler, William Gaffield, 1996 .

Structure-activity relations of teratogenic natural products

R. Keeler, W. Garfield, 1994 .

Early embryonic death in lambs induced by Veratrum californicum.

R. Keeler, 1990, The Cornell veterinarian.

Multiple congenital contractures (MCC) and cleft palate induced in goats by ingestion of piperidine alkaloid-containing plants: reduction in fetal movement as the probable cause.

T. Bunch, R. Keeler, K. Panter, 1990, Journal of toxicology. Clinical toxicology.

The nature of congenital limb defects induced in lambs by maternal ingestion of Veratrum californicum.

R. Keeler, L. D. Stuart, Richard F. Keeler, 1987, Journal of toxicology. Clinical toxicology.

Teratogenic effects of Nicotiana glauca and concentration of anabasine, the suspect teratogen in plant parts.

R. Keeler, K. Panter, L. Balls, 1981, The Cornell veterinarian.

Lupin alkaloids from teratogenic and nonteratogenic lupins. III. Identification of anagyrine as the probable teratogen by feeding trials.

R. Keeler, 1976, Journal of toxicology and environmental health.

Failure of dietary supplementation to prevent the abortions and congenital malformations of lathyrism and locoism in sheep.

R. Keeler, L. James, 1971, Canadian journal of comparative medicine : Revue canadienne de medecine comparee.

Plant and Fungal Toxins

A. Tu, R. Keeler, J. Cavender, 1984 .

Plants poisonous to livestock in the western States.

R. Keeler, M. C. Williams, L. James, 1980 .

Toxins and teratogens of higher plants.

R. Keeler, 1975, Lloydia.

Quinolizidine and piperidine alkaloid teratogens from poisonous plants and their mechanism of action in animals.

R. Keeler, K. Panter, 1993, The Veterinary clinics of North America. Food animal practice.

Piperidine alkaloid composition and relation to crooked calf disease-inducing potential of Lupinus formosus.

R. Keeler, K. Panter, 1989, Teratology.

Radio ultrasound observations of the fetotoxic effects in sheep from ingestion of Conium maculatum (poison-hemlock).

T. Bunch, R. Keeler, K. Panter, 1988, Journal of toxicology. Clinical toxicology.

Congenital defects in calves from maternal ingestion of Nicotiana glauca of high anabasine content.

R. Keeler, 1979, Clinical toxicology.

MULTIPLE CONGENITAL CONTRACTURES (MCC) AND CLEFT PALATE INDUCED IN GOATS BY INGESTION REDUCTION IN FETAL MOVEMENT AS THE PROBABLE CAUSE OF PIPERIDINE ALKALOID-CONTAINING PLANTS:

T. Bunch, R. Keeler, K. Panter, 1990 .

Oral, Osmotic Minipump, and Intramuscular Administration to Sheep of the Veratrum Alkaloid Cyclopamine

R. Keeler, D. Baker, 1989, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Comparative effects of retinoic acid and jervine on chondrocyte differentiation.

R. Keeler, W. Horton, M. Campbell, 1987, Teratology.

Inhibition of limb chondrogenesis by a Veratrum alkaloid: temporal specificity in vivo and in vitro.

R. Keeler, J. Hassell, K. Brown, 1985, Developmental biology.

Specific craniofacial defects induced by jervine in the cultured rat embryo.

R. Keeler, E. Goulding, R. Pratt, 1983, Teratogenesis, carcinogenesis, and mutagenesis.

Teratogenic compounds of Veratrum californicum as a function of plant part, stage, and site of growth☆

R. Keeler, W. Binns, 1971 .

Teratogenic compounds of Veratrum californicum (Durand). VII. The structure of the glycosidic alkaloid cycloposine.

R. Keeler, 1969, Steroids.

Possible Teratogenic Effects of Veratramine

R. Keeler, W. Binns, 1966, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Teratogenic compounds of Veratrum californicum (Durand). II. Production of ovine fetal cyclopia by fractions and alkaloid preparations.

R. Keeler, W. Binns, 1966, Canadian journal of biochemistry.

Lupin alkaloids from teratogenic and nonteratogenic lupins. IV. Concentration of total alkaloids, individual major alkaloids, and the teratogen anagyrine as a function of plant part and stage of growth and their relationship to crooked calf disease.

R. Keeler, J. L. Shupe, E. Cronin, 1976, Journal of toxicology and environmental health.

A congenital deformity in calves induced by the maternal consumption of lupin

R. Keeler, W. Binns, L. James, 1968 .

Teratogenic Effects of Cyclopamine and Jervine in Rats, Mice and Hamsters 1

R. Keeler, 1975, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Teratogenic compounds in Veratrum californicum (Durand) IX. Structure-activity relation.

R. Keeler, 1970, Teratology.

Reducing Incidence of Plant-Caused Congenital Deformities in Livestock by Grazing Management

R. Keeler, 1978 .

Teratogenic Compounds of Veratrum californicum (Durand) XI. Gestational Chronology and Compound Specificity in Rabbits

R. Keeler, 1971, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

Lupine-Induced Crooked Calf Disease and a Management Method to Reduce Incidence

R. Keeler, L. James, J. L. Shupe, 1977 .

Lupin alkaloids from teratogenic and nonteratogenic lupins. II. Identification of the major alkaloids by tandem gas chromatography-mass spectrometry in plants producing crooked calf disease.

R. Keeler, 1973, Teratology.

Crooked calf syndrome, a plant‐induced congenital deformity

R. Keeler, W. Binns, L. James, 1967 .

Preliminary investigation of the relationship between bovine congenital lathyrism induced by aminoacetonitrile and the lupine induced crooked calf disease.

R. Keeler, W. Binns, L. James, 1969, Canadian journal of comparative medicine : Revue canadienne de medecine comparee.

Effects of teratogenic agents in range plants.

R. Keeler, W. Binns, L. James, 1968, Cancer research.

Cleft palate in cattle.

R. Keeler, W. Binns, L. James, 1968, The Cleft palate journal.

A probable hereditary skeletal deformity in Hereford cattle.

R. Keeler, W. Binns, L. James, 1967, The Journal of heredity.

Effect of natural teratogens in poisonous plants on fetal development in domestic animals.

R. Keeler, 1972, Advances in experimental medicine and biology.

Experimental teratogenic lathyrism in sheep and further comparative aspects with teratogenic locoism.

R. Keeler, L. James, 1971, Canadian journal of comparative medicine : Revue canadienne de medecine comparee.

An apparent relationship between locoism and lathyrism.

R. Keeler, W. Binns, L. James, 1967, Canadian journal of comparative medicine and veterinary science.

The Hemlocks: Poison-hemlock (Conium maculatum) and Waterhemlock (Cicuta spp.)

R. Keeler, K. Panter, 2019, The Ecology and Economic Impact of Poisonous Plants on Livestock Production.

Investigation of maternal and embryo/fetal toxicity of Ephedra viridis and Ephedra nevadensis in sheep and cattle.

R. Keeler, 1989 .

Structure and stereochemistry of steroidal amine teratogens.

R. Keeler, William Gaffield, 1984, Advances in experimental medicine and biology.

Teratogenic effects of aminopterin in sheep.

R. Keeler, L. James, 1968, Teratology.

Plant terpenoids as pesticides.

A. Tu, S. Duke, R. Keeler, 1991 .

SILICON METABOLISM AND SILICON‐PROTEIN MATRIX INTERRELATIONSHIP IN BOVINE UROLITHIASIS *

R. Keeler, 1963, Annals of the New York Academy of Sciences.

Incorporation of Phosphorus-32 into Urinary Concretions forming on Zinc Implants in Rat Bladders

R. Keeler, S. A. Lovelace, 1961, Nature.

THE METABOLISM OF SILICON IN THE RAT AND ITS RELATION TO THE FORMATION OF ARTIFICIAL SILICEOUS CALCULI

R. Keeler, S. A. Lovelace, 1959, The Journal of experimental medicine.

Toxicology of plant and fungal compounds

A. Tu, R. Keeler, 1991 .

Intracellular localization of iron, calcium, molybdenum and tungsten in Azotobacter vinelandii.

J. Varner, R. Keeler, L. B. Carr, 1958, Experimental cell research.

EXTRACELLULAR ANTIGENS OF NOCARDIA ASTEROIDES. I. PRODUCTION AND IMMUNOLOGIC CHARACTERIZATION.

R. Keeler, A. Pier, 2015, The American review of respiratory disease.

Electrophoretic and Histological Evidence for Muscle Regeneration in Ovine Muscular Dystrophy

R. Keeler, S. Young, R. Keeler, 1962, Nature.

DISTRIBUTION OF MOLYBDENUM99 IN CELL-FREE PREPARATIONS OF AZOTOBACTER VINELANDII

J. Varner, R. Keeler, W. A. Bulen, 1956, Journal of bacteriology.

Structure-activity relation of steroid teratogens. 2. N-substituted jervines.

R. Keeler, D. Brown, 1978, Journal of agricultural and food chemistry.

Isolation of rubijervine from Veratrum californicum

R. Keeler, 1974 .

Implication of C-5, C-6 unsaturation as a key structural factor in steroidal alkaloid-induced mammalian teratogenesis

R. Keeler, William Gaffield, 1993, Experientia.

Induction of terata in hamsters by solanidane alkaloids derived from Solanum tuberosum.

R. Keeler, William Gaffield, 1996, Chemical research in toxicology.

Carbon-13 and Proton Nuclear Magnetic Resonance Spectra of Veratrum Alkaloids

R. Keeler, R. Lundin, M. Benson, 1986 .

Tricine-Buffered Tissue Culture Media for Control of Mycoplasma Contaminants 1

R. Spendlove, S. F. Hayes, R. Keeler, 1971, Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine.

The total alkaloid and anagyrine contents of some bitter and sweet selections of lupin species used as food.

R. Keeler, R. Gross, 1980, Journal of environmental pathology and toxicology.

Hemorrhagic necrosis of the central nervous system of fetal hamsters: litter incidence and age-related pathological changes.

R. Keeler, S. Young, 1978, Teratology.

BACKGROUND DOCUMENT FOR THE FIFRA SCIENTIFIC ADVISORY PANEL ON MAMMALIAN TOXICITY ASSESSMENT GUIDANCE FOR PROTEIN PLANT-PESTICIDES

R. Keeler, 2000 .

Color Reaction for Certain Amino Acids, Amines, and Proteins

R. Keeler, 1959, Science.

THE CO2 CONTENT AS A BASIS FOR DISTINGUISHING HEATED FROM UNHEATED MILK

R. Keeler, L. V. Slyke, 1920 .

Physiologic responses of ruminants to toxic factors extracted from rumen bacteria and rumen fluid.

R. Keeler, M. Allison, C. H. Mullenax, 1966, American journal of veterinary research.