# B cell

> English word · Noun

## Definitions
1. A lymphocyte, developed in the bursa of birds and the bone marrow of other animals, that produces antibodies and is co-responsible for the immune system.

## Etymology
From b(ursa) + cell.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/b-cell