What does the abbreviation "CD"in, for e.g. CD4+ cells, stands for?

Options :
  1. Clustered receptors for distribution
  2. Cluster of Differentiation
  3. Cluster for dissociation
  4. Cluster for dispersal
Answer and Explanation :-

Answer: Option 2

Explanation:

The cluster of differentiation (cluster of designation) (often abbreviated as CD) is a protocol used for the identification and investigation of cell surface molecules providing targets for immunophenotyping of cells.

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