The segment of the sperm flagellum where the mitochondrial sheath ends, and the outer dense fibers (ODFs) associated with outer axonemal doublets 3 and 8 are replaced by the 2 longitudinal columns of the fibrous sheath (FS) which run the length of the principal piece and are stabilized by circumferential ribs. The principal piece makes up ~2/3 of the length of the sperm flagellum and is defined by the presence of the FS and of only 7 (rather than 9) ODFs which taper and then terminate near the distal end of the principal piece.

The short tip of the sperm flagellum, adjacent to the sperm principal piece and furthest from the sperm head, which contains only the axoneme surrounded by the plasma membrane.

Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another as a result of a potassium ion stimulus.

Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another as a result of a calcium ion stimulus.

The lipid bilayer surrounding a lamellar body. A lamellar body is a membrane-bounded organelle, specialized for the storage and secretion of various substances (surfactant phospholipids, glycoproteins and acid phosphates) which are arranged in the form of tightly packed, concentric, membrane sheets or lamellae. Has some similar properties to, but is distinct from, a lysosome.

The lipid bilayer surrounding a secretory granule.

The lipid bilayer surrounding an alveolar lamellar body, a specialized secretory organelle found in type II pneumocytes and involved in the synthesis, secretion, and reutilization of pulmonary surfactant.

The lipid bilayer surrounding an epidermal lamellar body, a specialized secretory organelle found in keratinocytes and involved in the formation of an impermeable, lipid-containing membrane that serves as a water barrier and is required for correct skin barrier function.

OBSOLETE. Any process that activates or increases the frequency, rate or extent of fatty acid beta-oxidation by activating or increasing the frequency, rate or extent of transcription from an RNA polymerase II promoter.

OBSOLETE. Any process that increases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of deprivation of zinc ions.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a toxic stimulus.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a methylglyoxal stimulus. Methylglyoxal is a 2-oxoaldehyde derived from propanal.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a ketone stimulus.

Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an aldehyde stimulus.

Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a methylglyoxal stimulus. Methylglyoxal is a 2-oxoaldehyde derived from propanal.

Any process that increases the frequency, rate or extent of transcription from an RNA polymerase II promoter in response to a methylglyoxal stimulus.

The orderly movement of a hematopoietic stem cell into the bone marrow, and its subsequent positioning within defined functional compartments in that microenvironment. A hematopoietic stem cell is a cell from which all cells of the lymphoid and myeloid lineages develop, including blood cells and cells of the immune system.

The orderly movement of a hematopoietic stem cell from one site to another. A hematopoietic stem cell is a cell from which all cells of the lymphoid and myeloid lineages develop, including blood cells and cells of the immune system.

The process in which amyloid-beta is removed from extracellular brain regions by mechanisms involving cell surface receptors.

Binding to a flavonoid, a compound containing two or more aromatic rings, each bearing at least one aromatic hydroxyl and connected with a carbon bridge.