Results 71 to 80 of about 242,571 (301)

Comparison of morphological variations of interatrial septum of human, swine and ovine hearts. [PDF]

open access: yes, 2018
Comparison of morphological variations of interatrial septum of human, swine and ovine hearts.
Mateusz K. Hołda (713829)   +3 more
core   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Morphological variations of the thyroid gland [PDF]

open access: yes, 2017
Background:The knowledge of various morphological & developmental anomalies of thyroid gland will help the surgeons in better planning of safe & effective surgery.
Dakshayani, K. R.   +2 more
core   +1 more source

Readjustment of the Standard ASUDAS to Encompass Dental Morphological Variations in Plio-Pleistocene Hominins [PDF]

open access: yes, 2018
The standard ASUDAS scoring system (Arizona State University Dental Anthropology System) is used to assess dental morphological variations in modern humans.
Louail, M., Prat, S., M. Louail, S. Prat
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Provenance Variations in Morphological Characteristics of Acacia karroo Hayne Seedlings [PDF]

open access: yes, 2004
Page(s):12 (2), 219-234,11Ref.This study was carried out to assess the extent of intraspecific variation in morphological characteristics of the seedlings of Acacia karroo.
Khalil, A.A. M.   +2 more
core  

Proliferating Cell Nuclear Antigen (PCNA) allows the automatic identification of follicles in microscopic images of human ovarian tissue [PDF]

open access: yes, 2010
Background: Human ovarian reserve is defined by the population of non-growing follicles (NGFs) in the ovary. Direct estimation of ovarian reserve involves the identification of NGFs in prepared ovarian tissue. Previous studies involving human tissue have
Castillo, L   +9 more
core   +2 more sources

Morphological Variations of Leading-Edge Serrations in Owls (Strigiformes). [PDF]

open access: yesPLoS ONE, 2016
Owls have developed serrations, comb-like structures, along the leading edge of their wings. Serrations were investigated from a morphological and a mechanical point of view, but were not yet quantitatively compared for different species.
Matthias Weger, Hermann Wagner
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Morphological variations within the ontogeny of Deinonychus antirrhopus (Theropoda, Dromaeosauridae). [PDF]

open access: yes, 2015
This research resulted from the determination that MCZ 8791 is a specimen of Deinonychus antirrhopus between one and two years of age and that the morphological variations within particular growth stages of this taxon have yet to be described.
William L. Parsons (724154)   +5 more
core   +1 more source

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