On the Cover: The attachment of tumor cells to the omentum of a mouse injected i.p. ten hours earlier with 1×10⁶ labeled B16 melanoma tumor cells (blue). The omentum was stained simultaneously with anti-CD45 to label immune cells (red), anti-CD31 to mark blood vessels (green), and anti-LYVE-1 (yellow) to identify lymphatic vessels. (see page 1739)

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