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35701“…The objective of this study is to examine the presence of gynecologic oncology divisions on Instagram and to analyze the content of their posts. …”
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35702“…The dominant view postulates that value context-dependence is achieved via a divisive normalization rule, inspired by perceptual decision-making research. …”
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35703“…They arise from asymmetric divisions of radial glia and undergo self-renewing asymmetric divisions to generate neurons. …”
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35704“…We show that such chaos would ultimately lead to an unpredictable patchwork of cell divisions across the embryo. Given this potential for chaos, our results indicate a novel design principle whereby the fast calcium-wave trigger following embryo fertilization synchronizes cell divisions.…”
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35705“…During early larval stages, nutrients regulate the size of the neural progenitor pool via insulin/PI3K/TOR-dependent symmetric neuroepithelial divisions. During late larval stages, neural proliferation becomes insensitive to dietary nutrients, and the steroid hormone ecdysone acts on Delta/Notch signaling to promote the switch from symmetric mitoses to asymmetric neurogenic divisions. …”
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35706“…During asymmetric stem cell divisions, the mitotic spindle must be correctly oriented and positioned with respect to the axis of cell polarity to ensure that cell fate determinants are appropriately segregated into only one daughter cell. …”
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35707Asymmetric neurogenic commitment of retinal progenitors involves Notch through the endocytic pathway“…We show that early neurogenic progenitors arise from asymmetric divisions. Notch regulates this asymmetry, as when inhibited, symmetric divisions producing two neurogenic progenitors occur. …”
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35708“…The production of gametes (sperm and eggs in mammals) involves two sequential cell divisions, meiosis I and meiosis II. In meiosis I, homologous chromosomes segregate to different daughter cells, and meiosis II resembles mitotic divisions in that sister chromatids separate. …”
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35709por Wong, Samuel Z. H., Scott, Earl Parker, Mu, Wenhui, Guo, Xize, Borgenheimer, Ella, Freeman, Madeline, Ming, Guo-li, Wu, Qing-Feng, Song, Hongjun, Nakagawa, Yasushi“…Here, we performed in vivo clonal analysis to track the divisions of individual progenitor cells and spatial allocation of their progeny in the developing mouse thalamus. …”
Publicado 2018
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35710“…We find that single-cell asymmetric divisions are gradually replaced by stochastic population-level asymmetry as the mouse matures to adulthood. …”
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35711“…The model organism Dictyostelium discoideum is a member of the Amoebozoa, one of the six major divisions of eukaryotes. Amoebozoa comprise a wide variety of amoeboid and flagellate organisms with single cells measuring from 5 μm to several meters across. …”
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35712por Navarro Quiroz, Elkin, Navarro Quiroz, Roberto, Ahmad, Mostapha, Gomez Escorcia, Lorena, Villarreal, Jose Luis, Fernandez Ponce, Cecilia, Aroca Martinez, Gustavo“…The defining characteristic of neural stem cells (NSCs) is their ability to multiply through symmetric divisions and proliferation, and differentiation by asymmetric divisions, thus giving rise to different types of cells of the central nervous system (CNS). …”
Publicado 2018
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35713“…Some of the mechanisms underlying these errors in meiosis have been deciphered but which mechanisms could cause chromosome missegregation in the first embryonic cleavage divisions is mostly a “mystery”. In this article, we describe the starting conditions and challenges of these preimplantation divisions, which might impair faithful chromosome segregation. …”
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35714“…Both cases when [Formula: see text] is divisible by d and not divisible by d are discussed. …”
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35715“…Resident volumes were normalized to rotations, which were in divisions categorized by the location of the supervising faculty during the pandemic period; in ’remote’ divisions, all faculty worked off-site, whereas ’hybrid’ divisions had a mix of attendings working on-site and remotely. …”
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35716“…Volvocacean species undergo inversion to form a spheroidal cell layer following successive cell divisions during embryogenesis. During inversion, the daughter protoplasts change their shape and develop acute chloroplast ends (opposite to basal bodies). …”
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35717“…In November, 2020, NPLI has undergone on-site peer review of quality system of 23 Sub-Divisions through APMP.…”
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35718“…Many oocytes spontaneously complete the meiotic divisions, permitting visualization of progression from meiosis I to II. …”
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35719por Doyle, Alden M., Mullen, Alan C., Villarino, Alejandro V., Hutchins, Anne S., High, Frances A., Lee, Hubert W., Thompson, Craig B., Reiner, Steven L.“…The regulation of CTLA-4 expression and function ensures that, after ∼3 cell divisions of expansion, most progeny will succumb to either proliferative arrest or death over the ensuing three cell divisions. …”
Publicado 2001
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35720por Bhartiya, Deepa“…‘True’ stem cells are expected to undergo asymmetric cell divisions (ACD) whereby they divide to self-renew and give rise to a slightly bigger, differentiated cell. …”
Publicado 2018
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