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Example of in vivo 2PM data, showing three-dimensional reconstruction of cortical microvasculature (left), and the distribution of intravenously-injected transferrin receptor-targeted liposomes residing at the BBB interface (right). The transferrin receptor-targeted liposomes associate primarily to capillaries, then venules, but are absent in arterioles. The images were collected 2 h post injection. Modified from [14].
