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Male genitalia, hierarchical homology, and the anatomy of the bullet ant (Paraponera clavata; Hymenoptera, Formicidae).
J Morphol
September 2024
Department of Terrestrial Zoology, Entomology II, Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany.
The male genitalia of insects are among the most variable, complex, and informative character systems for evolutionary analysis and taxonomic purposes. Because of these general properties, many generations of systematists have struggled to develop a theory of homology and alignment of parts. This struggle continues to the present day, where fundamentally different models and nomenclatures for the male genitalia of Hymenoptera, for example, are applied.
View Article and Find Full Text PDFFinal irrigation protocols affect radicular dentin DMP1-CT expression, microhardness, and biochemical composition.
Clin Oral Investig
August 2022
Department of Endodontics, Faculty of Dentistry, LICIFO, University of Costa Rica, SJO, Sabanilla, San José, 11502, Costa Rica.
Objective: To evaluate the effect of several final irrigation protocols on radicular dentin microhardness, biochemical composition, and DMP1-CT expression.
Materials And Methods: A total of 140 single-rooted human teeth were prepared with WaveOne Gold files and randomly distributed into 7 groups (n = 20) according to the final irrigation protocol: distilled water (DW); sodium hypochlorite-EDTA (NaOCl-EDTA); EDTA (EDTA); EDTA-NaOCl (EDTA-NaOCl); EDTA-chlorhexidine (EDTA-CHX); passive ultrasonic irrigation (PUI:NaOCl-EDTA); and PUI:NaOCl-EDTA-NaOCl. Dentin microhardness (n = 10) was evaluated in the root canal lumen using Vickers hardness tester.
Bone foramen dimensions and blood flow calculation: best practices.
J Anat
February 2020
School of Biological Sciences, University of Adelaide, Adelaide, SA, Australia.
Some blood vessels enter bones through foramina, leaving the size of the foramen as a gauge for estimating the rate of blood flow and hence the metabolic rate of the supplied tissues. Foramen dimensions have been measured using varied methods in previous foramen studies, to relate regional blood flows with associated physiological processes. With the increasing interests in this 'foramen technique', standard methods with minimized measurement errors are therefore required.
View Article and Find Full Text PDFContrasting common measures of arbuscular mycorrhizal fungal root colonization.
J Microbiol Methods
December 2019
Department of Biology, University of British Columbia, Okanagan campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
Article Synopsis
- Estimating arbuscular mycorrhizal fungi abundance relies on indirect methods, primarily using microscopic analysis of root colonization, which can introduce variability and bias due to sampling.
- Researchers assessed two common microscopic methods (Trouvelot and McGonigle) alongside a new imaging technique that measures fungal coverage via microphotography.
- Results indicated that both microscopic methods tended to overestimate colonization and that the Trouvelot method closely aligned with the imaging analysis, whereas the McGonigle method showed more discrepancy.
[Pathology didactics : Development and pilot study of a pathology didactics curriculum (PaDiCu)].
Pathologe
March 2019
Institut für Medizinische Lehre (IML), Abteilung für Unterricht und Medien, Universität Bern, Konsumstraße 13, 3010, Bern, Schweiz.
Background: Pathologists are lifelong teachers. However, specialist training contains hardly any didactic learning objectives. Here, the competency-based learning objectives that a pathology didactics curriculum could include were examined.
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