Results 11 to 20 of about 1,618 (161)

Temporally and spatially dynamic germ cell niches in Botryllus schlosseri revealed by expression of a TGF-beta family ligand and vasa [PDF]

open access: yesEvoDevo, 2016
Background Germ cells are specified during early development and are responsible for generating gametes in the adult. After germ cells are specified, they typically migrate to a particular niche in the organism where they reside for the remainder of its ...
Adam D. Langenbacher   +1 more
doaj   +2 more sources

Cytochemical properties of Botryllus schlosseri haemocytes: indications for morpho-functional characterisation [PDF]

open access: yesEuropean Journal of Histochemistry, 2009
In the present study, we carried out a detailed light microscopy investigation of the cytochemical properties of the haemocytes of the colonial ascidian Botryllus schlosseri, using new cytochemical stains and enzymatic markers, a panel of antibodies and ...
L Ballarin, F Cima
doaj   +2 more sources

Extensive Fouling of Eelgrass (<i>Zostera marina</i> L.) Reproductive Shoots by Invasive Tunicates-A Potential Threat to Meadow Reproductive Output? [PDF]

open access: yesEcol Evol
Here, we document through field observations and photographs, the extensive fouling of seed‐bearing Z. marina reproductive shoots by invasive tunicates in a Cape Cod meadow during late spring/early summer 2025. Such fouling may block seed release and/or inhibit dispersal which may reduce meadow reproductive success.
Scavo Lord K, Bennett-Smith M, Novak AB.
europepmc   +2 more sources

Proteome-Wide 4-Hydroxy-2-Nonenal Signature of Oxidative Stress in the Marine Invasive Tunicate Botryllus schlosseri. [PDF]

open access: yesProteomics
ABSTRACT The ascidian Boytryllus schlosseri is a marine chordate that thrives under conditions of anthropogenic climate change. The B. schlosseri expressed proteome contains unusually high levels of proteins adducted with 4‐hydroxy‐2‐nonenal (HNE). HNE represents a prominent posttranslational modification resulting from oxidative stress.
Kültz D   +6 more
europepmc   +2 more sources

Fifty Years of Natural Killer Cells: Milestones and Future Horizons. [PDF]

open access: yesScand J Immunol
To mark 50 years of NK cell research, a 2025 Karolinska symposium traced discoveries from spontaneous cytotoxicity and “missing self” recognition to receptor biology, cellular diversity, and translational advances, highlighting NK cells’ evolution into modern immunotherapy.
Lundqvist A   +7 more
europepmc   +2 more sources

Morphological Characteristics, Mitochondrial Genome, and Evolutionary Insights Into a New Sea Squirt From the Beibu Gulf. [PDF]

open access: yesEcol Evol
ABSTRACT A new species of the genus Microcosmus was described in this study based on specimens collected from the coast of Xilian Town, Xuwen County, Zhanjiang, Guangdong Province, China. The morphological and molecular characteristics of this new species, Microcosmus sp. z YZ‐2024 (YZ‐2024), distinguish it from other sea squirts.
Zhang Y   +10 more
europepmc   +2 more sources

Antimicrobial and Cytotoxic activities of Ascidian Species Collected from Egyptian Coasts

open access: yesBulletin of Faculty of Pharmacy Cairo University, 2022
Discovering novel drugs for curing cancer and infectious diseases is the prime interest of several research areas now. Marine sessile invertebrates have produced secondary metabolites, a lot of which are utilized as novel pharmaceutical agents with ...
Amany Metwally   +3 more
doaj   +1 more source

Vascular regeneration in a basal chordate is due to the presence of immobile, bi-functional cells. [PDF]

open access: yesPLoS ONE, 2014
The source of tissue turnover during homeostasis or following injury is usually due to proliferation of a small number of resident, lineage-restricted stem cells that have the ability to amplify and differentiate into mature cell types.
Brian P Braden   +5 more
doaj   +1 more source

Vascular Aging in the Invertebrate Chordate, Botryllus schlosseri

open access: yesFrontiers in Molecular Biosciences, 2021
Vascular diseases affect over 1 billion people worldwide and are highly prevalent among the elderly, due to a progressive deterioration of the structure of vascular cells.
Delany Rodriguez   +6 more
doaj   +1 more source

An elongated COI fragment to discriminate botryllid species and as an improved ascidian DNA barcode

open access: yesScientific Reports, 2021
Botryllids are colonial ascidians widely studied for their potential invasiveness and as model organisms, however the morphological description and discrimination of these species is very problematic, leading to frequent specimen misidentifications.
Marika Salonna   +8 more
doaj   +1 more source

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