CD40

noun

a costimulatory protein found on antigen presenting cells and required for their activation by CD154 of T_H cells, with deficiency of CD40 possibly leading to hyper-IgM syndrome type 3.

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Meanings

nounCD40 (uncountable)
  1. uncountablea costimulatory protein found on antigen presenting cells and required for their activation by CD154 of T_H cells, with deficiency of CD40 possibly leading to hyper-IgM syndrome type 3.

Origin

from cluster of differentiation

Full word history & related roots →
Cite this entry
APA

CD40. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/CD40

MLA

“CD40.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/CD40. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “CD40,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/CD40.

Source: CD40 on Wiktionary, CC BY-SA 4.0.