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CD4

American  

noun

  1. a protein on the surface of T cells and other cells, functioning as a receptor for the AIDS virus antigen.


Etymology

Origin of CD4

1980–85; c(luster of) d(ifferentiation) 4

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

CD4 count is the number of CD4 T-cells, a type of white blood cell, in the blood.

From Science Daily • May 7, 2024

Five of the eight treated patients developed specific immune responses against the mutant protein, which were dominated by CD4 T-helper cells.

From Science Daily • Sep. 21, 2023

The typical range for CD4 cells is from 500 to 1,500 per cubic millimeter of blood.

From New York Times • Feb. 21, 2023

In the cases where people had few CD4 cells, mpox’s normally small skin lesions grew into large necrotizing patches and their infection sometimes spread to the lungs or caused severe secondary infections with bacteria.

From Science Magazine • Feb. 20, 2023

Tests showed the patient was also HIV-positive, which he had not known, and that his blood had few CD4 cells, critical immune cells that HIV attacks.

From Science Magazine • Feb. 20, 2023