Results 161 to 170 of about 110,511 (285)

Cryo‐SEM and large volume FIB‐SEM of Arabidopsis cotyledons: Degradation of lipid bodies, biogenesis of glyoxysomes and reorganisation of organelles during germination

open access: yesJournal of Microscopy, EarlyView.
Abstract Until recently, the lack of three‐dimensional visualisation of whole cells at the electron microscopic (EM) level has led to a significant gap in our understanding of the interaction of cellular organelles and their interconnection. This is particularly true with regard to the role of the endoplasmic reticulum (ER).
Gerhard Wanner   +2 more
wiley   +1 more source

Rac1 signaling in the establishment of the fucoid algal body plan

open access: yesFrontiers in Plant Science, 2014
Fucoid zygotes use environmental vectors, including sunlight, to initiate a growth axis a few hours after fertilization. The first division is then transversely oriented by the growth axis, producing daughter cells of distinct fates.
Whitney E Hable
doaj   +1 more source

A comparison of calcification mechanisms in haploid and diploid cells of the coccolithophore Calcidiscus leptoporus (Murray & Blackman 1898)

open access: yesJournal of Phycology, EarlyView.
Abstract Coccolithophores are prominent marine pelagic calcifiers due to their production of calcite coccoliths. Diploid coccolithophores produce heterococcoliths intracellularly, with an organic cellulose baseplate scale acting as a nucleating substrate. However, coccolith production in the haploid life phase has not been extensively studied.
Erin M. Meyer, Alison R. Taylor
wiley   +1 more source

Auditory stimulation during deep sleep enhances total slow‐wave activity in a young cohort: A feasibility trial

open access: yesJournal of Sleep Research, EarlyView.
Summary Cognitive, metabolic and sleep benefits associated with enhancement of sleep slow waves using closed‐loop auditory stimulation have been reported in adults but not in adolescents, especially in home settings. Seventeen volunteers (10F/7M; age range: 13–18 years old) participated in a 2‐week, single‐blind, crossover study.
Gary Garcia Molina   +8 more
wiley   +1 more source

Relaxation and noise-driven oscillations in a model of mitotic spindle dynamics [PDF]

open access: yesarXiv
During cell division, the mitotic spindle moves dynamically through the cell to position the chromosomes and determine the ultimate spatial position of the two daughter cells. These movements have been attributed to the action of cortical force generators which pull on the astral microtubules to position the spindle, as well as pushing events by these ...
arxiv  

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