cd40

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. a [[costimulatory]] [[protein]] found on [[antigen presenting cell]]s and required for their activation by [[CD154]] of [[T helper cell|T_H cell]]s, with [[deficiency]] of CD40 possibly leading to [[hyper-IgM syndrome type 3]].

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