Two large (ca. 0.5 mm long), rare, and probably closely related species of Facetotecta (y-larvae), Hansenocaris cristalabri sp. nov. aquila nov., are described on the basis last-stage lecithotrophic nauplii reared from plankton at Sesoko Island, Okinawa, Japan. The two resemble each other in having a labrum with row spines long, attenuate trunk region that terminates heavily spinose dorsocaudal...

objective(s) the cytotoxic effects of crude ethanol extracts of some previously tested iranian conifers  on tumor cell lines have motivated us to screen different parts of two subspecies in these genus. materials and methods terminal branchlets and berries of juniperus excelsa subsp. excelsa and j. excelsa subsp. polycarpos were collected, dried and extracted with ethanol/h2o (80/20 v/v) via pe...

We propose a pseudo-physics system and a spine model that can be coupled to generate life-like locomotion animations of quadrupeds and reptiles. The pseudo-physics system uses minimalist particle-based physics and values of the gait pattern to generate the sinusoidal-like ballistic movement of the pelvis observed in nature. While the spine model uses simple geometry-based calculations and 3D He...

Dendritic spines in hippocampal neurons mature from a filopodia-like precursor into a mushroom-shape with an enlarged post-synaptic density (PSD) and serve as the primary post-synaptic location of the excitatory neurotransmission that underlies learning and memory. Using myosin II regulatory mutants, inhibitors, and knockdowns, we show that non-muscle myosin IIB (MIIB) activity determines where...

Background & Importance: Cavernous angiomas are typically superficial lesionscreated by anomalous vessels and found in the skin or mucosa, but intradural locations are rare especially in the spine. We report a case of the spinal intradural Cavernous angiomas of the lumbar spine. Case Presentation: A 53-year-old man presented with a 6-month history of low back pain and bilateral radicular pai...

Keywords: biophysics | neuroscience | synapse | synaptic plasticity | structural plasticity | filopodium | dendritic spine | cytoskeleton | canham helfrich | actin Dendritic spines are small membranous structures that protrude from the neuronal dendrite. Each spine contains a synaptic contact site that may connect its parent dendrite to the axons of neighboring neurons. Dendritic spines are mar...

Alterations in dendritic spines have been documented in numerous neurodevelopmental disorders, including Rett Syndrome (RTT). RTT, an X chromosome-linked disorder associated with mutations in MECP2, is the leading cause of intellectual disabilities in women. Neurons in Mecp2-deficient mice show lower dendritic spine density in several brain regions. To better understand the role of MeCP2 on exc...

Spine morphology is regulated by intracellular signals, like PKC, that affect cytoskeletal and membrane dynamics. We investigated the role of MARCKS (myristoylated, alanine-rich C-kinase substrate) in dendrites of 3-week-old hippocampal cultures. MARCKS associates with membranes via the combined action of myristoylation and a polybasic effector domain, which binds phospholipids and/or F-actin, ...

Spine is an experimental veri cation system based on Promela/Spin version 1.5.7. Spin is a general veri cation tool for proving correctness properties of concurrent/distributed systems speci ed in the CSP-like modeling language Promela [8, 9]. This extended abstract describing the Spine system and its foundations assumes familiarity with Promela/Spin. The Spine system extends Spin with `limited...