Search Results - (Author, Cooperation:L. Calder)

2011-07-30

American Association for the Advancement of Science (AAAS)

0036-8075

1095-9203

Biology

Chemistry and Pharmacology

Computer Science

Medicine

Natural Sciences in General

Physics

Animals ; Antibodies, Neutralizing/*immunology/isolation & purification ; Antibodies, Viral/*immunology/isolation & purification ; Antibody Specificity ; Antigens, Viral/*immunology ; Cells, Cultured ; Cross Reactions ; Crystallography, X-Ray ; Epitopes/immunology ; Ferrets ; Glycosylation ; Hemagglutinin Glycoproteins, Influenza Virus/*immunology ; Humans ; Hydrophobic and Hydrophilic Interactions ; Immunization, Passive ; Immunoglobulin Variable Region/immunology ; Influenza A Virus, H1N1 Subtype/immunology ; Influenza A virus/*immunology ; Influenza B virus/immunology ; Influenza, Human/immunology ; Mice ; Models, Molecular ; Molecular Sequence Data ; Orthomyxoviridae Infections/immunology/prevention & control/therapy ; Plasma Cells/immunology ; Protein Multimerization ; Protein Structure, Secondary

1365-2761

Blackwell Publishing Journal Backfiles 1879-2005

Biology

Medicine

Abstract. Broad, non-septate, fungal hyphae are a constant finding in the necrotising dermatitis lesions and dermal ulcers characteristic of red spot disease. During a one-year period, fungi with hyphae morphologically consistent with those seen in histological sections of lesions were recovered from 27 out of 28 lesions on sea mullet, Mugil cephalus L., yellowfin bream, Acanthopagrus australis (Owen), and sand whiting, Sillago ciliata Cuvier, collected from three widely separated river systems in eastern Australia. Cultural and morphological characteristics, including spore formation, of 24 of these isolates were examined. In addition, tolerances to different salinities, growth on different media and growth at different temperatures were studied for three representative isolates, one from each species of fish. These studies suggest that all isolates belonged to a single species within the genus Aphanomyces. Their role in the pathogenesis of red spot disease, and their relationship with other Aphanomyces spp. affecting fish, is discussed.

Electronic Resource

0006-291X

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Physics

Electronic Resource

1420-9071

Weight control ; energetics ; foraging ; territory

Springer Online Journal Archives 1860-2000

Biology

Medicine

Summary By day, a breeding male hummingbird gives priority to aerial performance over energy security, minimizing body weight gain to expedite flight activity. We observed behavior and monitored weight via perches on electronic balances in a territory with unlimited resources (artificial feeder). The male restricted his first feeding to less than 1/6 of crop capacity. In the ensuing 15 h, his body weight increased only 1% despite an unlimited resource of artificial nectar. This facilitated acceleration for pursuit and courtship flights and reduced energy cost. In 20 min at dusk, an intake of 34% of body weight provided adequate energy for temperature regulation all night. In July, cessation of territorial activity was accompanied by a regular upward drift of dawn weight, suggesting that weight had been regulated previously as a balance between expenditure and intake, perhaps without involving set-points.

Electronic Resource

1432-2072

Cocaine ; Amphetamine ; Behavioral sensitization ; Apomorphine ; PPHT ; Mouse

Springer Online Journal Archives 1860-2000

Medicine

Abstract The present experiments were designed to compare the properties of behavioral sensitization induced by the indirect agonists, amphetamine and cocaine, to that induced by the direct dopamine agonists, apomorphine and PPHT. Both classes of agonist produced sensitization when administered either in relatively low daily doses or in a single high dose. Mice sensitized to the indirect agonists were cross-sensitized to the direct agonists and vice versa. A pharmacological evaluation of the sensitization induced by the two types of agonist demonstrated both similarities and dissimilarities. Induction to the indirect agonists is blocked by CPP, DNQX and diltiazem, whereas only CPP and diltiazem blocked induction to the direct agonists. Furthermore, although none of these antagonists block the expression of sensitization by the direct agonists, all three were previously shown to block the amphetamine expression of sensitization. Striking differences were also observed in the persistence of the sensitization induced by the two types of agonists. While the indirect agonist-induced sensitization is relatively short-lived. Furthermore, crosssensitization of PPHT in amphetamine-sensitized animals was also short-lived, as was amphetamine crosssensitization in PPHT-sensitized animals. The data suggest that the induction of sensitization consitization consists of two separable mechanisms, one for induction per se, the other for persistence.

Electronic Resource