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901.
Romain Gasser Marc Cloutier Jérémie Prévost Corby Fink Éric Ducas Shilei Ding Nathalie Dussault Patricia Landry Tony Tremblay Audrey Laforce-Lavoie Antoine Lewin Guillaume Beaudoin-Bussières Annemarie Laumaea Halima Medjahed Catherine Larochelle Jonathan Richard Gregory A. Dekaban Jimmy D. Dikeakos Andrés Finzi 《Cell reports》2021,34(9):108790
902.
903.
Jimmy T. Mills 《Journal of phycology》1975,11(2):149-154
A new species of Hymenomonas (H. coronata) has been isolated from the Texas coast, grown in axenic culture, and examined by both light and electron microscopy. Certain cultural and ultrastructural observations are presented. This alga has several haptophycean characteristics, although a definite haptonema has not been observed. Similarities to other members of the genus are evident, such us type and shape of coccoliths and pyrenoid-chloroplast morphology. 相似文献
904.
905.
In olfactory research,neural oscillations exhibit excellent temporal regularity,which are functional and necessary at the physiological and cognitive levels.In this paper,we employed a bionic tissue biosensor which treats intact epithelium as sensing element to record the olfactory oscillations extracellularly.After being stimulated by odorant of butanedione,the olfactory receptor neurons generated different kinds of oscillations,which can be described as pulse firing oscillation,transient firing oscillation,superposed firing oscillation,and sustained firing oscillation,according to their temporal appearances respectively.With a time-frequency analysis of sonogram,the oscillations also demonstrated different frequency properties,such as δ,θ,α,β and γ oscillations.The results suggest that the bionic biosensor cooperated with sonogram analysis can well improve the investigation of olfactory oscillations,and provide a novel model for artificial olfaction sensor design. 相似文献
906.
Bart L. Haagmans Judith M. A. van den Brand Lisette B. Provacia V. Stalin Raj Koert J. Stittelaar Sarah Getu Leon de Waal Theo M. Bestebroer Geert van Amerongen Georges M. G. M. Verjans Ron A. M. Fouchier Saskia L. Smits Thijs Kuiken Albert D. M. E. Osterhaus 《Journal of virology》2015,89(11):6131-6135
The ability of Middle East respiratory syndrome coronavirus (MERS-CoV) to infect small animal species may be restricted given the fact that mice, ferrets, and hamsters were shown to resist MERS-CoV infection. We inoculated rabbits with MERS-CoV. Although virus was detected in the lungs, neither significant histopathological changes nor clinical symptoms were observed. Infectious virus, however, was excreted from the upper respiratory tract, indicating a potential route of MERS-CoV transmission in some animal species. 相似文献
907.
908.
V. Stalin Raj Saskia L. Smits Lisette B. Provacia Judith M. A. van den Brand Lidewij Wiersma Werner J. D. Ouwendijk Theo M. Bestebroer Monique I. Spronken Geert van Amerongen Peter J. M. Rottier Ron A. M. Fouchier Berend Jan Bosch Albert D.M.E. Osterhaus Bart L. Haagmans 《Journal of virology》2014,88(3):1834-1838
Middle East respiratory syndrome coronavirus (MERS-CoV) replicates in cells of different species using dipeptidyl peptidase 4 (DPP4) as a functional receptor. Here we show the resistance of ferrets to MERS-CoV infection and inability of ferret DDP4 to bind MERS-CoV. Site-directed mutagenesis of amino acids variable in ferret DPP4 thus revealed the functional human DPP4 virus binding site. Adenosine deaminase (ADA), a DPP4 binding protein, competed for virus binding, acting as a natural antagonist for MERS-CoV infection. 相似文献
909.
Miquella G. Chavez Jimmy Hu Kerstin Seidel Chunying Li Andrew Jheon Adrien Naveau Orapin Horst Ophir D. Klein 《Journal of visualized experiments : JoVE》2014,(87)
Understanding the cellular and molecular mechanisms that underlie tooth regeneration and renewal has become a topic of great interest1-4, and the mouse incisor provides a model for these processes. This remarkable organ grows continuously throughout the animal''s life and generates all the necessary cell types from active pools of adult stem cells housed in the labial (toward the lip) and lingual (toward the tongue) cervical loop (CL) regions. Only the dental stem cells from the labial CL give rise to ameloblasts that generate enamel, the outer covering of teeth, on the labial surface. This asymmetric enamel formation allows abrasion at the incisor tip, and progenitors and stem cells in the proximal incisor ensure that the dental tissues are constantly replenished. The ability to isolate and grow these progenitor or stem cells in vitro allows their expansion and opens doors to numerous experiments not achievable in vivo, such as high throughput testing of potential stem cell regulatory factors. Here, we describe and demonstrate a reliable and consistent method to culture cells from the labial CL of the mouse incisor. 相似文献
910.
Female genital morphology in the secondarily haplogyne spider genus Glenognatha Simon, 1887 (Araneae,Tetragnathidae), with comments on its phylogenetic significance 下载免费PDF全文
Jimmy Cabra‐García Gustavo Hormiga Antonio D. Brescovit 《Journal of morphology》2014,275(9):1027-1040
Female genital morphology of secondarily haplogyne spiders has been poorly studied, hampering the analysis of its possible phylogenetic significance. We conduct a comparative morphological study of 12 species of the secondarily haplogyne spider genus Glenognatha Simon, 1887 using scanning electron microscopy. Representatives of the closely related genera Pachygnatha Sundevall, 1823 and Dyschiriognatha Simon, 1893 were also examined. The female genitalia of Glenognatha, Dyschiriognatha, and Pachygnatha species examined are composed of a spiracle‐shape gonopore, a membranous chamber, a pair of copulatory ducts (CD) leading to spermathecae and a large uterus externus (UE). The most significant variation among Glenognatha species, previously unregistered within Araneoidea, is related with the absence or presence of CD and spermathecae. In addition, several characters as the form and distribution of long stem gland ductules and compartmentalization of the UE may be important for phylogenetic inference at species and generic level. Our results corroborate the close relationship between Dyshiriognatha and Glenognatha. A table with potentially informative female genitalic characters for phylogenetic inference within Glenognatha is provided. Understanding the general structure of the female genitalia in secondarily haplogyne taxa is a crucial step in order to propose characters for phylogenetic inference and to understand its possible functional significance. J. Morphol. 275:1027–1040, 2014. © 2014 Wiley Periodicals, Inc. 相似文献