The movement of a leukocyte within or between different tissues and organs of the body.

The regulated exocytosis of secretory granules containing preformed mediators such as histamine and serotonin by a platelet.

Any process that activates or increases the frequency, rate, or extent of leukocyte migration.

Any process that activates or increases the frequency, rate, or extent of leukocyte migration.

Any process that modulates the frequency, rate, or extent of cellular extravasation.

The immediate defensive reaction (by vertebrate tissue) to infection or injury caused by chemical or physical agents. The process is characterized by local vasodilation, extravasation of plasma into intercellular spaces and accumulation of white blood cells and macrophages.

The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules.

The attachment of an adhesion molecule in one cell to a nonidentical adhesion molecule in an adjacent cell.

The attachment of a leukocyte to another cell via adhesion molecules.

The attachment of a leukocyte to another cell via adhesion molecules.

The attachment of a leukocyte to another cell via adhesion molecules.

Any process that increases the rate or frequency of platelet activation. Platelet activation is a series of progressive, overlapping events triggered by exposure of the platelets to subendothelial tissue.

Any process that increases the rate or frequency of platelet activation. Platelet activation is a series of progressive, overlapping events triggered by exposure of the platelets to subendothelial tissue.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the phosphatidylinositol 3-kinase cascade.

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 an organic cyclic compound stimulus.

The attachment of one cell to another cell via adhesion molecules, where both cells are part of the same organism.

Any process that results in a change in state or activity of an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a lipopolysaccharide stimulus; lipopolysaccharide is a major component of the cell wall of gram-negative bacteria.

Any process that results in a change in state or activity of an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a lipopolysaccharide stimulus; lipopolysaccharide is a major component of the cell wall of gram-negative bacteria.

Any process that modulates the frequency, rate, or extent of integrin activation.

Any process that modulates the frequency, rate, or extent of integrin activation.

Any process that modulates the frequency, rate, or extent of integrin activation.

A series of molecular signals in which a cell uses calcium ions released from an intracellular store to convert a signal into a response.

A series of molecular signals in which a cell uses calcium ions released from an intracellular store to convert a signal into a response.

Any process that activates or increases the frequency, rate or extent of cell adhesion.

Reactions triggered in response to the presence of a Gram-negative bacterium that act to protect the cell or organism.

The movement of a leukocyte within or between different tissues and organs of the body.

Transient adhesive interactions between leukocytes and endothelial cells lining blood vessels. Carbohydrates on circulating leukocytes bind selectins on the vessel wall causing the leukocytes to slow down and roll along the inner surface of the vessel wall. During this rolling motion, transitory bonds are formed and broken between selectins and their ligands. Typically the first step in cellular extravasation (the movement of leukocytes out of the circulatory system, towards the site of tissue damage or infection).

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 interleukin-6 stimulus.

The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

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

The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.

The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.

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

The lipid bilayer surrounding the platelet dense granule.

The lipid bilayer surrounding the platelet alpha granule.

The lipid bilayer surrounding the platelet alpha granule.

The lipid bilayer surrounding the platelet alpha granule.