The reorganization or renovation of existing blood vessels.

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

The binding of a cell to the extracellular matrix that contributes to the directed movement of an ameboid cell.

The binding of a cell to the extracellular matrix that contributes to the directed movement of an ameboid cell.

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.

The binding of a cell to the extracellular matrix via adhesion molecules.

The binding of a cell to the extracellular matrix via adhesion molecules.

The binding of a cell to the extracellular matrix via adhesion molecules.

The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood.

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

The controlled self-propelled movement of a cell from one site to a destination guided by molecular cues. Cell migration is a central process in the development and maintenance of multicellular organisms.

The process in which a precursor cell type acquires the specialized features of a B cell. A B cell is a lymphocyte of B lineage with the phenotype CD19-positive and capable of B cell mediated immunity.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of an extracellular matrix.

The attachment of a cell to a cell of a different type via adhesion molecules.

The attachment of a cell to a cell of a different type via adhesion molecules.

The morphogenetic process that results in flattening of a cell as a consequence of its adhesion to a substrate.

The morphogenetic process that results in flattening of a cell as a consequence of its adhesion to a substrate.

The process in which a relatively unspecialized cell acquires the specialized features of an endoderm cell, a cell of the inner of the three germ layers of the embryo.

The receptor metabolic process that results in grouping of a set of receptors at a cellular location, often to amplify the sensitivity of a signaling response.

The receptor metabolic process that results in grouping of a set of receptors at a cellular location, often to amplify the sensitivity of a signaling response.

Any process that modulates the frequency, rate or extent of the immune response, the immunological reaction of an organism to an immunogenic stimulus.

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).

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).

The passage of a leukocyte between the tight junctions of endothelial cells lining blood vessels, typically the fourth and final step of cellular extravasation.

The biological process whose specific outcome is the progression of a face from an initial condition to its mature state. The face is the ventral division of the head.

The process whose specific outcome is the progression of a mesenchymal tissue over time, from its formation to the mature structure. A mesenchymal tissue is made up of loosely packed stellate cells.

The cell-cell adhesion process in which the cells of the chorion fuse to the cells of the allantois.

The progression of the visceral serous pericardium from its formation to the mature structure. The visceral serous pericardium is the inner layer of the pericardium.

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 cytokine stimulus.

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

Any process that decreases the frequency, rate or extent of protein homodimerization, interacting selectively with an identical protein to form a homodimer.

Any process that decreases the frequency, rate or extent of protein homodimerization, interacting selectively with an identical protein to form a homodimer.

Any process that decreases the frequency, rate or extent of protein homodimerization, interacting selectively with an identical protein to form a homodimer.

The directed movement of some substance from outside of a cell into the cytoplasmic compartment. This may occur via transport across the plasma membrane or via endocytosis.

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

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

The clathrin-mediated endocytosis of an extracellular exosome.

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

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

The external part of the cell wall and/or plasma membrane.

A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.

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

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

A cell junction that forms a connection between two or more cells in a multicellular organism; excludes direct cytoplasmic junctions such as ring canals.

Small region on the surface of a cell that anchors the cell to the extracellular matrix and that forms a point of termination of actin filaments.

Small region on the surface of a cell that anchors the cell to the extracellular matrix and that forms a point of termination of actin filaments.

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.

The external part of the cell wall and/or plasma membrane.

The external part of the cell wall and/or plasma membrane.

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

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

An integrin complex that comprises one alpha4 subunit and one beta7 subunit.

An integrin complex that comprises one alpha4 subunit and one beta7 subunit.

A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.