# Cajal body

> English word · Noun

## Definitions
1. A spherical membraneless nuclear body largely consisting of proteins and RNA, found in the nucleus of proliferative cells like embryonic cells and tumor cells, or metabolically active cells like neurons.

## Etymology
Discovered by Santiago Ramón y Cajal (1852–1934), Spanish neuroscientist and histologist, in 1903.

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