Companion Cells: Specialized cells in the phloem that load sugars into the sieve elements and help maintain a functional plasma membrane in the sieve elements.

 

Related Words

Companion Cells: Specialized cells in the phloem that load sugars into the sieve elements and help maintain a functional plasma membrane in the sieve elements.

Plasma Cells: Cells produced from B cells that synthesize and release antibodies.

Mast Cells: Cells that synthesize and release histamine, as during an allergic response; found most often in connective tissue surrounding blood vessels.

Langerhans Cells: Epidermal cells that participate in the infiammatory response by engulfing microorganisms and releasing chemicals that mobilize immune system cells.

Helper T Cells: A type of lymphocyte that stimulates the production of antibodies by activating B cells when an antigen is present.

Schwann Cells: Specialized glial cells that form the myelin sheath that coats many axons. Cells surrounding the axons of some neurons, thus forming the myelin sheath.

Sieve Cells: Conducting cells in the phloem of vascular plants. See sieve elements

Suppressor T Cells: T cells that slow down and stop the immune response of B cells and other T cells. Immune system cells that shut off the antibody production when an infection is under control.

Stem Cells: Cells in bone marrow that produce lymphocytes by mitotic division.

Somatic Cells: Any cell in the body except gametes and their precursors.