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Creator | Title | Description | Subject | Date |
| 201 |
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Olivera, Baldomero M.; ; McIntosh, J. Michael | Localization of [125I] ω-conotoxin GVIA binding in human hippocampus and cerebellum | THE peptide toxin ω-conotoxin GVIA (ω-CgTx) has been shown to be a high affinity ligand for N-type calcium channels in the brain. We have employed [125I]ω-CgTx to localize N-type channels in human hippocampus and cerebellum using autoradiography. Ten micron thick slidemounted tissue sections of... | Conotoxins; Peptide toxins | 1993 |
| 202 |
 |
Adler, Frederick R. | Recent rapid increases in the right whale (Eubalaena australis) population off southern Brazil | Right whales (Eubalaena australis) that gather on a wintering ground off southern Brazil have been aerial surveyed and photographically identified since 1987. As of 2003 the Brazilian Right Whale Catalogue has 315 different individual whales of which 31 were resighted in other years (23 females, 3 y... | | 2005 |
| 203 |
 |
Sperry, John S. | Evolution of water transport and xylem structure | Land plants need water to replace the evaporation that occurs while atmospheric CO2 is diffusing into photosynthetic tissue. The water-for-carbon exchange rate is poor, and evolutionary history indicates a progression of innovations for cheap water transport--beginning in order with capillary sucti... | Cavitation; Vessels; Plants | 2003 |
| 204 |
 |
Clayton, Dale H.; Rogers, Alan R. | Genetic analysis of lice supports direct contact between modern and archaic humans | Parasites can be used as unique markers to investigate host evolutionary history, independent of host data. Here we show that modern human head lice, Pediculus humanus, are composed of two ancient lineages, whose origin predates modern Homo sapiens by an order of magnitude (ca. 1.18 million years). | Pediculus humanus; Head lice; Molecular phylogeny; Phthirus | 2004 |
| 205 |
 |
Olivera, Baldomero M.; Hillyard, David R. | Conotoxins | Many successful animal and plant families have developed distinctive biochemical strategies; one of the more unusual examples is found in a group of marine gastropods, the cone snails (Conus) (1). These animals have evolved a specialized biochemistry of small constrained peptides, the conotoxins. Th... | Conotoxins | 1991 |
| 206 |
 |
Ehleringer, James R. | Fuentes de aqua utilizadas por las plantas desérticas y su importancia en planes de manejo y restauración ecológica | El agua es el factor más importante que afecta a la productividad primaria y la estructura de la vegetación en ecosistemas áridos. Dado que las especies de plantas pueden diferir en sus capacidades de utilizar distintas fuentes de agua, el conocimiento de estos aspectos es fundamental para los ... | Fuentes de agua; Isótopos estables; 8-H; 5 l sO; Zonas áridas; Plantas desérticas; Relaciones hídricas; Restauración ecológica; Desierto de Atacama; Atacama Desert; Stable isotopes; Water sources; Arid regions; Ecological restoration; Water relations; Water supplies | 2000 |
| 207 |
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Coley, Phyllis D.; Kursar, Thomas A. | Food quality, competition, and parasitism influence feeding preference in a neotropical lepidopteran | We surveyed Lepidoptera found on 11 species of Inga (Fabaceae:Mimosoideae) co-existing on Barro Colorado Island, Panama, to evaluate factors influencing diet choice. Of the 47 species of caterpillars (747 individuals) recorded, each fed on a distinct set of Inga. In the field, 96% of the individuals... | Competition; Electivity; Gelechiid; Herbivore growth; Fabaceae; Inga; Leaf expansion; Leafing phenology; Lipidoptera; Panama; Parasitism; Plant quality | 2006 |
| 208 |
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Bohs, Lynn A. | Ethnobotany of the genus Cyphomandra (Solanaceae) | Plants of the genus Cyphomandra (Solanaceae) have long been utilized for their edible fruits in their native Latin America. The best-known species is the domesticated tree tomato or tamarillo, Cyphomandra betacea. This species, popular as a raw or cooked fruit, is widely cultivated in Andean South ... | Cyphomandra; Cyphomandra betacea; Alkaloids | 1989 |
| 209 |
 |
Capecchi, Mario R. | Yeast super-suppressors are altered tRNAs capable of translating a nonsense codon in vitro. | tRNA isolated from two different yeast super-suppressor strains translates a known nonsense mutation in vitro, whereas tRNA from a closely related nonsuppressing strain does not. Suppression was assayed by translation of RNA isolated from an amber coat mutant of bacteriophage Qbeta (GB11) in a prote... | Codon; Escherichia coli; Protein Biosynthesis | 1975-11 |
| 210 |
 |
Olivera, Baldomero M. | Bacteriophage Mu DNA replication in vitro | An in vitro system for bacteriophage Mu DNA replication using lysates on cellophane discs is described. Mu replication was monitored by DNA hybridization. Using a thermoinducible Mu Iysogen, 30-50% of all DNA synthesis in vitro was Mu-specific. | Bacteriophage Mu | 1983 |
| 211 |
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Adler, Frederick R. | Is space necessary? Interference competition and limits to biodiversity | A single trade-off between competitive ability and mortality has been shown to support an arbitrarily large number of species in models of interference competition in spatially structured populations. We show that this results not from spatial structure, but instead from the assumption that a small ... | Mortality rate; Competitive ability; Seed size | 2000 |
| 212 |
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Sperry, John S. | Analysis of circular bordered pit function I. Angiosperm vessels with homogenous pit membranes | A model predicted pit and vessel conductivity, the air-seed pressure for cavitation, and the implosion pressure causing vessel collapse. Predictions were based on measurements from 27 angiosperm species with circular bordered pits and air-seed pressures of 0.2-11.3 MPa. Vessel implosion pressure exc... | Functional wood anatomy; hydraulic architecture; plant biomechanics | 2004 |
| 213 |
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Sperry, John S. | Evaluation of Murray's law in Psilotum nudum (Psilotaceae), an analogue of ancestral vascular plants | Previous work has shown that the xylem of seed plants follows Murray's law when conduits do not provide structural support to the plant. Here, compliance with Murray's law was tested in the stem photosynthesizer Psilotum nudum, a seedless vascular plant. Psilotum nudum was chosen because the central... | Conduit furcation number; hydraulic architecture; Murray's law | 2005 |
| 214 |
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Bastiani, Michael | Central projections of the stretch receptor neurons of crayfish: structure, variation, and postembryonic growth | Each stretch receptor neuron (SR) of the crayfish abdomen projects from its peripherally located soma an axon that enters the CNS through the second nerve (N2) of its segmental ganglion. CoZ+ backfills of N2 revealed that this axon bifurcates, sending one branch to the brain and the other to the te... | Abdomen; Axon; Ganglion | 1988 |
| 215 |
 |
Seger, Jon; Davidson, Diane W. | Biological richness of deserts | A desert is "waterless," "treeless," "barren," "remote," "uninteresting," and "presumably uninhabited," according to the authoritative Oxford English Dictionary. The word is derived from deserere, a Latin verb meaning "to leave." In English, to desert is still to "abandon," "forsake," or "fail." Bec... | Desert life; Desert biodiversity | 1995 |
| 216 |
 |
Olivera, Baldomero M. | Pyridine nucleotide metabolism in Escherichia coli. IV. Turnover | There are two pyridine nucleotide turnover pathways in Escherichia coli, the Gholson turnover cycle, with nicotinamide as an intermediate, and a second new pathway which does not involve nicotinamide. In exponentially growing cultures with a generation time of 60 min, the rates of these cycles are ... | Turnover cycle; Adenine | 1973 |
| 217 |
 |
Bastiani, Michael | Role of the cell surface in neuronal pathfinding | Perhaps the organ of the human body that evokes the most astonishment, and yet is the least understood, is our brain. From the coordination of simple movements, to consciousness and thought, the function of the nervous system relies on the establishment of trillions of precise connections among the... | Axon; molecular guidance code; growth cone | 1996 |
| 218 |
 |
Bohs, Lynn A. | Phylogenetic relationships among the "spiny solanums" (Solanum subgenus Leptostemonum, Solanaceae) | Species of Solanum subgenus Leptostemonum comprise almost one third of the genus and are distributed worldwide. Members of this group are defined by their sharp epidermal prickles; thus, they are commonly referred to as the ˜spiny solanums." This subgenus includes a number of economically important... | Granule-bound starch synthase gene; GBSSI; Heterandry; ITS; Leptostemonum; Solanum; trnS-trnG; Waxy | 2006 |
| 219 |
 |
Olivera, Baldomero M. | Identification and characterization of a Ca2+-sensitive nonspecific cation channel underlying prolonged repetitive firing in Aplysia neurons | The afterdischarge of Aplysia bag cell neurons has served as a model system for the study of phosphorylation-mediated changes in neuronal excitability. The nature of the depolarization generating the afterdischarge, however, has remained unclear. We now have found that venom from Conus textile trig... | Ca21-activated nonspecific cation channel; Slow inward current; Ion channel modulation; Afterdischarge; Bursting; Aplysia bag cell neurons; Conus textile; Neurotoxins | 1996 |
| 220 |
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Coley, Phyllis D. | Patrones en las defensas de las plantas: ? Porque los herbivoros prefrieren ciertas especies? | Patterns of heitmory and plant defenses arc presented lor 47 tree species studied on Barro Colorado Island, Panama. Species growing In comparable microhabitats differ in the rates of herbivore damage by 4 orderi of magnitude. Over 70%QT these between-specles differences in herbivory can be explaine... | | 1987 |
| 221 |
 |
Coley, Phyllis D.; Kursar, Thomas A. | Effects of weather on fungal abundance and richness among 25 communities in the Intermountain West | Because moisture and temperature influence the growth of fungi, characterizing weather conditions favorable for fungi may be used to predict the abundance and richness of fungi in habitats with different climate conditions. To estimate habitat favorability to fungi, we examined the relationship of f... | Intermountain West; Utah; Microclimate; Fungal prevalence | 2002 |
| 222 |
 |
Hansen, Mark S.; Healy, Lindsey J.; Johnson, Christopher R.; Capecchi, Mario R.; Keller, Charles; Jones, Greg M. | Virtual histology of transgenic mouse embryos for high-throughput phenotyping. | A bold new effort to disrupt every gene in the mouse genome necessitates systematic, interdisciplinary approaches to analyzing patterning defects in the mouse embryo. We present a novel, rapid, and inexpensive method for obtaining high-resolution virtual histology for phenotypic assessment of mouse ... | Forkhead Transcription Factors; Paired Box Transcription Factors | 2006 |
| 223 |
 |
Olivera, Baldomero M.; Hillyard, David R. | Pyridine nucleotide cycle: studies in Escherichia coli and the human cell line D98/AH2 | Different metabolic steps comprise the pyridine nucleotide cycles in Escherichia coli and in the human cell line HeLa D98/AH2. An analysis of the "P-labeling patterns in vivo reveals that in E. coli, pyrophosphate bond cleavage of intracellular NAD predominates, while in the human cell line, cleava... | Nicotinic acid; Turnover cycle; DNA ligation; Nicotinamide | 1981 |
| 224 |
 |
Gesteland, Raymond F.; Atkins, John F.; Felden, Brice; McCutcheon, John P. | Probing the structure of the Escherichia coli 10Sa RNA (tmRNA) | The conformation of the Escherichia coli 10Sa RNA (tmRNA) in solution was investigated using chemical and enzymatic probes. Single- and double-stranded domains were identified by hydrolysis of tmRNA in imidazole buffer and by lead(II)-induced cleavages. Ribonucleases T1 and S1 were used to map unpai... | Covariation; Pseudoknot; Structural Probing; 10Sa RNA; tmRNA | 1997 |
| 225 |
 |
Capecchi, Mario R. | Xanthine oxidoreductase is central to the evolution and function of the innate immune system. | The housekeeping enzyme xanthine oxidoreductase (XOR) has been studied intensively over the past 100 years, yet the complexity of its in vivo function is still poorly understood. A large body of literature focuses on the different catalyltic forms of XOR and their importance in the synthesis of reac... | Animals; Gene Expression Regulation, Enzymologic; Humans; Immune System; Models, Biological | 2003-09-01 |
