What does cd4 mean?

Definitions for cd4
cd4

This dictionary definitions page includes all the possible meanings, example usage and translations of the word cd4.

Princeton's WordNet

  1. cluster of differentiation 4, CD4noun

    a glycoprotein that is found primarily on the surface of helper T cells

    "CD4 is a receptor for HIV in humans"

Wikipedia

  1. CD4

    In molecular biology, CD4 (cluster of differentiation 4) is a glycoprotein that serves as a co-receptor for the T-cell receptor (TCR). CD4 is found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells. It was discovered in the late 1970s and was originally known as leu-3 and T4 (after the OKT4 monoclonal antibody that reacted with it) before being named CD4 in 1984. In humans, the CD4 protein is encoded by the CD4 gene.CD4+ T helper cells are white blood cells that are an essential part of the human immune system. They are often referred to as CD4 cells, T-helper cells or T4 cells. They are called helper cells because one of their main roles is to send signals to other types of immune cells, including CD8 killer cells, which then destroy the infectious particle. If CD4 cells become depleted, for example in untreated HIV infection, or following immune suppression prior to a transplant, the body is left vulnerable to a wide range of infections that it would otherwise have been able to fight.

ChatGPT

  1. cd4

    CD4 is a glycoprotein found on the surface of immune cells such as T-helper cells, monocytes, macrophages, and dendritic cells. It plays a crucial role in the immune system by aiding in the activation and coordination of immune responses. In particular, CD4 is commonly recognized for its importance in the body's response to HIV infection as the virus primarily targets CD4 cells, leading to a weakened immune system.

Wikidata

  1. CD4

    In molecular biology, CD4 is a glycoprotein found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells. It was discovered in the late 1970s and was originally known as leu-3 and T4 before being named CD4 in 1984. In humans, the CD4 protein is encoded by the CD4 gene. CD4+ T helper cells are white blood cells that are an essential part of the human immune system. They are often referred to as CD4 cells, T-helper cells or T4 cells. They are called helper cells because one of their main roles is to send signals to other types of immune cells, including CD8 killer cells. CD4 cells send the signal and CD8 cells destroy and kill the infection or virus. If CD4 cells become depleted, for example in untreated HIV infection, or following immune suppression prior to a transplant, the body is left vulnerable to a wide range of infections that it would otherwise have been able to fight.

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Numerology

  1. Chaldean Numerology

    The numerical value of cd4 in Chaldean Numerology is: 7

  2. Pythagorean Numerology

    The numerical value of cd4 in Pythagorean Numerology is: 7

Examples of cd4 in a Sentence

  1. Anya Nopalit:

    With my first child, I was scared, but with my second, I was not scared at all because I knew what my viral load and CD4 levels were, and he wouldn't contract it.


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"cd4." Definitions.net. STANDS4 LLC, 2025. Web. 15 Feb. 2025. <https://www.definitions.net/definition/cd4>.

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