accessory cell


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accessory cell

[ak′ses·ə·rē ‚sel]
(botany)
A morphologically distinct epidermal cell adjacent to, and apparently functionally associated with, guard cells on the leaves of many plants.
(immunology)
Any nonlymphocytic cell that helps in the induction of the immune response by presenting antigen to a helper T lymphocyte.
References in periodicals archive ?
We used a T-lymphocyte proliferation assay to estimate the macrophage function as accessory cells.
Commentary on the WHO 2008 classification of neoplasms arising from histiocytic and other accessory cells.
13) T-cells in these patients usually respond to nonspecific mitogens and other non-candida antigens suggesting that the defect probably involves the accessory cells.