Results 241 to 250 of about 30,178 (283)
Two new asteltoxins produced by solid-state fermentation of <i>Pochonia suchlasporia</i> TAMA 87 and their effects on cell division in sea urchin embryos. [PDF]
J Pestic SciNguyen TKN +4 more
europepmc +1 more source
Sea Urchin Pigment Ethylspinazarin (U-573): A Novel P2X7 Receptor Antagonist with Neuroprotective and Antiparkinsonian Effects. [PDF]
Int J Mol SciPislyagin E +10 more
europepmc +1 more source
Regulatory feedback between VEGF and ERK pathways controls tip-cell expression during sea urchin skeletogenesis. [PDF]
DevelopmentNehrer T +3 more
europepmc +1 more source
Developmental effects of sulfated thyroid hormones in sea urchin skeletogenesis suggest activation of non-canonical thyroid hormone signaling pathway. [PDF]
Front Endocrinol (Lausanne)Tieman K, Heyland A.
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Biological Reviews, 1951
Summaryi. The head of the sea‐urchin spermatozoon is pear‐shaped and axially symmetrical. The sub‐microscopic morphology of the middle piece has not been investigated, but the tail, which terminates in an axial fibre, probably contains spiral or coiled structures, as in mammalian spermatozoa.2.
openaire +2 more sources
Summaryi. The head of the sea‐urchin spermatozoon is pear‐shaped and axially symmetrical. The sub‐microscopic morphology of the middle piece has not been investigated, but the tail, which terminates in an axial fibre, probably contains spiral or coiled structures, as in mammalian spermatozoa.2.
openaire +2 more sources
Clinical Toxicology, 2005
A 25-year-old female was walking along a shallow tropical reef when she felt a sharp pain in her right great toe. Upon exiting the water, she noted multiple dark spines protruding from the foot.
openaire +2 more sources
A 25-year-old female was walking along a shallow tropical reef when she felt a sharp pain in her right great toe. Upon exiting the water, she noted multiple dark spines protruding from the foot.
openaire +2 more sources
2004
Publisher Summary The chapter describes the structures and functions of sea urchin spermatozoa. Methods for the isolation of different parts of the sea urchin sperm are discussed. Sea urchin sperm are specialized for five functions: (1) oxidative phosphorylation to produce ATP, (2) flagellar motility, (3) the acrosome reaction, (4) binding to the egg,
Victor D, Vacquier, Noritaka, Hirohashi
openaire +2 more sources
Publisher Summary The chapter describes the structures and functions of sea urchin spermatozoa. Methods for the isolation of different parts of the sea urchin sperm are discussed. Sea urchin sperm are specialized for five functions: (1) oxidative phosphorylation to produce ATP, (2) flagellar motility, (3) the acrosome reaction, (4) binding to the egg,
Victor D, Vacquier, Noritaka, Hirohashi
openaire +2 more sources
Sea urchin DNA methyltransferases
Cell Biophysics, 1989DNA methyltransferase activities have been partially purified from unfertilized eggs and blastula nuclei of sea urchin embryos. Comparative studies, using different DNAs as substrates, show that the two preparations are most active on hemimethylated and single-strand DNA, but they methylate, though at a lower rate, also on double-strand DNA.
Tosi L +5 more
openaire +3 more sources
2016
In the sea urchin morphogenesis follows extensive molecular specification. The specification controls the many morphogenetic events and these, in turn, precede patterning steps that establish the larval body plan. To understand how the embryo is built it was necessary to understand those series of molecular steps.
openaire +2 more sources
In the sea urchin morphogenesis follows extensive molecular specification. The specification controls the many morphogenetic events and these, in turn, precede patterning steps that establish the larval body plan. To understand how the embryo is built it was necessary to understand those series of molecular steps.
openaire +2 more sources
Apoptosis in Sea Urchin Embryos
Biochemical and Biophysical Research Communications, 1997It is demonstrated by DNA electrophoresis analysis, morphological observations and TdT in situ reaction, that Paracentrotus embryos if treated with TPA plus heat undergo an apoptotic reaction. Indication is also obtained that non treated embryos undergo spontaneous apoptosis at the early pluteus stage, especially in the districts of arms and intestine.
M C, Roccheri +7 more
openaire +2 more sources