Results 11 to 20 of about 67,784 (308)

Ontogenetic shape trajectory of Trichomycterus areolatus varies in response to water velocity environment.

open access: yesPLoS ONE, 2021
Body and head shape among fishes both vary between environments influenced by water velocity and across ontogeny. Although the shape changes associated with variation in average water velocity and ontogeny are well documented, few studies have tested for
Peter C Searle   +3 more
doaj   +1 more source

Ontogeny of neuroembryology [PDF]

open access: yesThe Journal of Neuroscience, 1988
This essay commemorates the 100th anniversary of the birth of neuroembryology. One cannot, of course, ascribe the beginning of a branch of science to a single year, but the years between 1885 and 1890 saw major publications by the German anatomist Wilhelm His (1831–1904) and the Spanish histologist S.
openaire   +2 more sources

Ontogeny of Myeloid Cells [PDF]

open access: yesFrontiers in Immunology, 2014
Granulocytes, monocytes, macrophages, and dendritic cells (DCs) represent a subgroup of leukocytes, collectively called myeloid cells. During the embryonic development of mammalians, myelopoiesis occurs in a stepwise fashion that begins in the yolk sac and ends up in the bone marrow (BM).
Ismé eDe Kleer   +4 more
openaire   +6 more sources

Abnormal Epigenetic Regulation of Immune System during Aging

open access: yesFrontiers in Immunology, 2018
Epigenetics refers to the study of mechanisms controlling the chromatin structure, which has fundamental role in the regulation of gene expression and genome stability.
Miriam G. Jasiulionis
doaj   +1 more source

The Ontogeny of Monocyte Subsets [PDF]

open access: yesFrontiers in Immunology, 2019
Classical and non-classical monocytes, and the macrophages and monocyte-derived dendritic cells they produce, play key roles in host defense against pathogens, immune regulation, tissue repair and many other processes throughout the body. Recent studies have revealed previously unappreciated heterogeneity among monocytes that may explain this ...
Anja A. Wolf   +7 more
openaire   +4 more sources

On growth and form of irregular coiled-shell of a terrestrial snail: Plectostoma concinnum (Fulton, 1901) (Mollusca: Caenogastropoda: Diplommatinidae) [PDF]

open access: yesPeerJ, 2014
The molluscan shell can be viewed as a petrified representation of the organism’s ontogeny and thus can be used as a record of changes in form during growth.
Thor-Seng Liew   +3 more
doaj   +2 more sources

Ontogeny of the Human Pelvis [PDF]

open access: yesThe Anatomical Record, 2017
ABSTRACTThe human pelvis has evolved over time into a remarkable structure, optimised into an intricate architecture that transfers the entire load of the upper body into the lower limbs, while also facilitating bipedal movement. The pelvic girdle is composed of two hip bones, os coxae, themselves each formed from the gradual fusion of the ischium ...
Verbruggen, S.W., Nowlan, N.C.
openaire   +4 more sources

Ontogeny of purinergic receptor-regulated Ca2+ signaling in mouse cortical collecting duct epithelium [PDF]

open access: yes, 2002
Changes in ATP-induced increase in {[}Ca2+], during collecting duct ontogeny were studied in primary monolayer cultures of mouse ureteric bud (UB) and cortical collecting duct (CCD) cells by Fura-PE3 fluorescence ratio imaging.
Tschop, J.   +4 more
core   +1 more source

Analysis of the Spatiotemporal Development of Hematopoietic Stem and Progenitor Cells in the Early Human Embryo

open access: yesStem Cell Reports, 2019
Summary: Definitive hematopoietic stem cells (HSCs) first emerge in the aorta-gonad-mesonephros (AGM) region in both mice and humans. An ex vivo culture approach has enabled recapitulation and analysis of murine HSC development.
Jennifer Easterbrook   +6 more
doaj   +1 more source

Ontogenesis of the asymmetric parapineal organ in the zebrafish epithalamus

open access: yesFrontiers in Cell and Developmental Biology, 2022
The parapineal organ is a midline-derived epithalamic structure that in zebrafish adopts a left-sided position at embryonic stages to promote the development of left-right asymmetries in the habenular nuclei.
Karina Palma   +17 more
doaj   +1 more source

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