Peter van Endert and Loredana Saveanu are at INSERM U580, 161 rue de Sèvres, Paris 75015, France. vanender@necker.fr
Dendritic cells have the unique capacity of processing soluble exogenous proteins for presentation to killer T lymphocytes. Now Cresswell and associates show that this is possible because pinocytosed material gains access to the perinuclear endoplasmic reticulum of dendritic cells.
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