BP

GO:0006952

defense response

Reactions, triggered in response to the presence of a foreign body or the occurrence of an injury, which result in restriction of damage to the organism attacked or prevention/recovery from the infection caused by the attack.

TAS

BP

GO:0007155

cell adhesion

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

IEA

BP

GO:0007165

signal transduction

The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.

NAS

BP

GO:0019221

cytokine-mediated signaling pathway

A series of molecular signals initiated by the binding of a cytokine to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.

IEA

BP

GO:0030593

neutrophil chemotaxis

The directed movement of a neutrophil cell, the most numerous polymorphonuclear leukocyte found in the blood, in response to an external stimulus, usually an infection or wounding.

IEA

BP

GO:0045637

regulation of myeloid cell differentiation

Any process that modulates the frequency, rate or extent of myeloid cell differentiation.

IEA

BP

GO:0097186

amelogenesis

The process whose specific outcome is the formation of tooth enamel, occurring in two stages: secretory stage and maturation stage.

IEA

CC

GO:0005576

extracellular region

The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

IEA

CC

GO:0005886

plasma membrane

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

TAS

CC

GO:0005887

integral component of plasma membrane

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.

TAS

MF

GO:0004872

receptor activity

Combining with an extracellular or intracellular messenger to initiate a change in cell activity.

TAS

MF

GO:0004896

cytokine receptor activity

Combining with a cytokine and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.

IEA