The developmental growth that results in the elongation of a line that defines polarity or symmetry in an anatomical structure.

The emergence of an immature organism from a protective structure.

The response to external or internal stimuli that results in the locomotory process of swimming. Swimming is the self-propelled movement of an organism through the water.

Any process that activates or increases the frequency, rate or extent of neuron differentiation.

The process in which neuroepithelial cells in the ventral neural tube acquire specialized structural and/or functional features of motor neurons. Motor neurons innervate an effector (muscle or glandular) tissue and are responsible for transmission of motor impulses from the brain to the periphery. Differentiation includes the processes involved in commitment of a cell to a specific fate.

The process in which a relatively unspecialized cell acquires specialized features of a neuron residing in the cerebral cortex.

The process whose specific outcome is the progression of a neuron projection over time, from its formation to the mature structure. A neuron projection is any process extending from a neural cell, such as axons or dendrites (collectively called neurites).

Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.

Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.

Any process that stops, prevents, or reduces the frequency, rate or extent of the Notch signaling pathway.

Any process that stops, prevents, or reduces the frequency, rate or extent of the Notch signaling pathway.

Any process that stops, prevents, or reduces the frequency, rate or extent of the Notch signaling pathway.

Any process that activates or increases the rate or extent of progression through the cell cycle.

The process controlling the activation and/or rate at which relatively unspecialized cells acquire specialized features. Any process that modulates the rate, frequency or extent of the XXX at a consistent predetermined time point during its development.

A process that is carried out at the cellular level which results in dynamic structural changes to the arrangement of actin filaments.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

The lipid bilayer surrounding the endoplasmic reticulum.

A filamentous structure formed of a two-stranded helical polymer of the protein actin and associated proteins. Actin filaments are a major component of the contractile apparatus of skeletal muscle and the microfilaments of the cytoskeleton of eukaryotic cells. The filaments, comprising polymerized globular actin molecules, appear as flexible structures with a diameter of 5-9 nm. They are organized into a variety of linear bundles, two-dimensional networks, and three dimensional gels. In the cytoskeleton they are most highly concentrated in the cortex of the cell just beneath the plasma membrane.

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

A thin sheetlike process extended by the leading edge of a migrating cell or extending cell process; contains a dense meshwork of actin filaments.

The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.

The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.

The portion of endoplasmic reticulum, the intracellular network of tubules and cisternae, that occurs near the nucleus. The lumen of the perinuclear endoplasmic reticulum is contiguous with the nuclear envelope lumen (also called perinuclear space), the region between the inner and outer nuclear membranes.