Results 31 to 40 of about 215,533 (345)

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

Ontogeny and Systematics of the Genus \u3ci\u3eCerophagus\u3c/i\u3e (Acari: Gaudiellidae), Mites Associated With Bumblebees [PDF]

open access: yes, 2017
Nymphs and adults of Cerophagus nearcticus n. sp. are described from the nest of Bombus terricola occidentalis in California and phoretic associations with B. impatiens in Michigan and New York.
OConnor, Barry M
core   +2 more sources

Dendritic cells, monocytes and macrophages: a unified nomenclature based on ontogeny

open access: yesNature reviews. Immunology, 2014
The mononuclear phagocyte system (MPS) has historically been categorized into monocytes, dendritic cells and macrophages on the basis of functional and phenotypical characteristics.
M. Guilliams   +8 more
semanticscholar   +1 more source

THE FIRST FOSSIL RECORD OF A MANTIS LACEWING PUPA, AND A REVIEW OF PUPAE IN MANTISPIDAE AND THEIR EVOLUTIONARY SIGNIFICANCE

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2023
During ontogenetic development, insects can undergo quite drastic changes (metamorphosis) until the adult stage is reached. A substantial part of this development in one group of Insecta, Holometabola, takes place during the pupa stage. Despite the pupa
Carolin Haug   +7 more
doaj   +1 more source

Intrinsic and extrinsic factors drive ontogeny of early-life at-sea behaviour in a marine top predator [PDF]

open access: yes, 2017
Young animals must learn to forage effectively to survive the transition from parental provisioning to independent feeding. Rapid development of successful foraging strategies is particularly important for capital breeders that do not receive parental ...
Bennett, Kimberley A.   +6 more
core   +5 more sources

Growth of Mycobacterium tuberculosis in vivo segregates with host macrophage metabolism and ontogeny

open access: yesJournal of Experimental Medicine, 2018
To understand how infection by Mycobacterium tuberculosis (Mtb) is modulated by host cell phenotype, we characterized those host phagocytes that controlled or supported bacterial growth during early infection, focusing on the ontologically distinct ...
Lu Huang   +4 more
semanticscholar   +1 more source

Loneliness Across the Life Span [PDF]

open access: yes, 2015
Most people have experienced loneliness and have been able to overcome it to reconnect with other people. In the current review, we provide a life-span perspective on one component of the evolutionary theory of loneliness—a component we refer to as the ...
Bangee, Munirah   +7 more
core   +5 more sources

Ontogenetic Patterns of Elemental Tracers in the Vertebrae Cartilage of Coastal and Oceanic Sharks

open access: yesFrontiers in Marine Science, 2021
As predators, coastal and oceanic sharks play critical roles in shaping ecosystem structure and function, but most shark species are highly susceptible to population declines.
Mariah C. Livernois   +7 more
doaj   +1 more source

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.
Borscheid, R.   +4 more
core   +1 more source

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