CD3

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Science and technology

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What Wikipedia says

CD3 (cluster of differentiation 3) is a protein complex and T cell co-receptor that is involved in activating both the cytotoxic T cell (CD8+ naive T cells) and T helper cells (CD4+ naive T cells). It is composed of four distinct chains. In mammals, the complex contains a CD3γ chain, a CD3δ chain, and two CD3ε chains.

Excerpt from the Wikipedia article “CD3 (immunology)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Original uploader was Ciar (talk) at en.wikipedia, Public domain, via Wikimedia Commons.