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Is CD4(domain 1) CD4?

Source: Elabscience®Published: Mar 04,2024

CD4 (domain1) is not the same as CD4, it means the first domain of CD4 protein, also known as D1 domain or Ig-likeV-type domain, so it can be used as a substitution of CD4. CD4 (cluster of differentiation 4) protein, a surface molecule of immune cells which is often used to identify and label helper T lymphocytes (CD4+T cells), consists of four domains, including an extracellular domain, a transmembrane domain and an intracellular domain.