21-cell to cell interactions

Extracellular Matrix

A network of proteins or carbohydrates that provide structural support to cells.

Tight Junctions

Connections between adjacent animal cells that form regulated barriers and watertight seals.

Desmosomes

Strong connections that hold animal cells together to form tissues through proteins called cadherins.

Gap Junctions

Narrow protein channels made of connexin that allow for communication between adjacent animal cells.

Collagen

A protein that forms a strong but flexible matrix in the extracellular matrix of animal cells.

Proteoglycan

Proteins that form a gelatinous matrix in the extracellular matrix, binding water and resisting compression.

Plasmodesmata

Small cylindrical extensions of the plasma membrane in plant cells that allow for communication between neighboring cells.

Cellulose Microfibrils

Carbohydrates that form a strong, rigid matrix in the cell wall of plant cells.

Turgor Pressure

The pressure within a plant cell that keeps it firm, counteracted by the cell wall.

Pectin

A carbohydrate that forms a gelatinous matrix in plant cells, helping to bind water and resist compression.