# CD4 vs CTC

> English confusable word pair

## The two words

### CD4
*noun · frequency rank #39,729*
A glycoprotein found on the surface of helper T cells and several other types of immune cells.

### CTC
*name · frequency rank #43,100*
Initialism of Children's Theater Company, a company in Minneapolis.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/cd4-vs-ctc