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- 419University of Alberta, Department of Biological Sciences
- 138Sawchuk, Matthew
- 81Mark A. Lewis
- 52Lewis, Mark A.
- 52Stockey, R.A.
- 23Wishart, D.S.
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Variation in premaxillary tooth count and a developmental abnormality in a tyrannosaurid dinosaur
Download2010
Tanke, D. H., Currie, P. J., Miyashita, T.
Premaxillary tooth count tends to be stable amongst toothed dinosaurs, and most theropods have four teeth in each premaxilla. Only one case of bilaterally asymmetric variation is known in theropod premaxillary dentition, and there is no record of ontogenetic or individual variation in...
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Vegetative Growth of Decodon allenbyensis (Lythraceae) from the Middle Eocene Princeton Chert with Anatomical Comparisons to Decodon verticillatus.
Download2003
Large numbers of roots and stems of aquatic Lythraceae have been found in association with fruits and seeds of Decodon allenbyensis Cevallos-Ferriz et Stockey in the Princeton chert, British Columbia, Canada. The permineralized fossils come from layer 43 in the chert, part of the Middle Eocene,...
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Vegetative Growth of Eorhiza arnoldii Robison and Person from the Middle Eocene Princeton Chert Locality of British Columbia.
Download1994
Anatomical studies of several thousand specimens of Eorhiza arnoldii Robison and Person rhizomes and their attached organs have added significantly to our knowledge of these Middle Eocene, semiaquatic dicotyledonous plants from the Princeton chert. Anatomical structure of Eorhiza was studied...
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Videos: ATP and glutamate coordinate contractions in the freshwater sponge Ephydatia muelleri
Download2024-05-23
Videos to accompany the research article "ATP and glutamate coordinate contractions in the freshwater sponge Ephydatia muelleri".
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2018-01-01
University of Alberta, Department of Biological Sciences
This image is part of a series illustrating how to load an electrophoresis gel from Tyler Research Corporation. This image demonstrates viewing a finished gel electrophoresis with UV light. This technique is taught in Molecular Genetics and Heredity: Biology 207. This image was created as part of...
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Visual pigment composition in zebrafish: Evidence for a rhodopsin-porphyropsin interchange system
Download2004
Temple, S. E., Allison, W. T., Haimberger, T. J., Hawryshyn, C. W.
Abstract: Numerous reports have concluded that zebrafish (Danio rerio) possesses A(1)-based visual pigments in their rod and cone photoreceptors. In the present study, we investigated the possibility that zebrafish have a paired visual pigment system. We measured the spectral absorption...
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Visualization of dynein-dependent microtubule gliding at the cell cortex: implications for spindle positioning
Download2011
Dynein motors move along the microtubule (MT) lattice in a processive “walking” manner. In the one-cell Caenorhabditis elegans embryo, dynein is required for spindle-pulling forces during mitosis. Posteriorly directed spindle-pulling forces are higher than anteriorly directed forces, and this...
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2004
Background: The family of voltage-gated potassium channels comprises a functionally diverse group of membrane proteins. They help maintain and regulate the potassium ion-based component of the membrane potential and are thus central to many critical physiological processes. VKCDB (Voltage-gated...
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2018-01-01
University of Alberta, Department of Biological Sciences
This image is part of a series displaying key features of micropipetting. This image illustrates a micropipette. This laboratory equipment is used in Introduction to Cell Biology: Biology 107 and Molecular Genetics and Heredity: Biology 207. This image was created as part of the University of...