Accessory cell

Immunology. any of various cells of the immune system that work with T or B cells to initiate a specific immune response.
Also called subsidiary cell. Botany. a plant epidermal cell associated with guard cells and different morphologically from other epidermal cells.
accessory cell
See subsidiary cell.


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  • Accessory cephalic vein

    accessory cephalic vein accessory cephalic vein n. A variable vein that passes along the radial border of the forearm to join the cephalic vein near the elbow.

  • Accessory chromosome

    . Historical Examples In these latter stages the nucleolus has entirely faded out and nothing suggesting an accessory chromosome is present. Studies in Spermatogenesis (Part 1 of 2) Nettie Maria Stevens Thionin was found to be a very useful stain for distinguishing between the accessory chromosome and an ordinary nucleolus. Studies in Spermatogenesis (Part 1 […]

  • Accessory fruit

    a fruit, as the apple, strawberry, or pineapple, that contains, in addition to a mature ovary and seeds, a significant amount of other tissue. noun another name for pseudocarp accessory fruit A fruit, such as the pear or strawberry, that develops from a ripened ovary or ovaries but also has tissue derived from part of […]

  • Accessory gland

    accessory gland accessory gland n. A small mass of glandular tissue detached from, but lying near, another gland of similar structure. Historical Examples The accessory gland in the male (fig. 43, ag) is probably a modification of one of these organs. The Works of Francis Maitland Balfour, Volume 1 Francis Maitland Balfour

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