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Created by: Jill Gallaher, Maximilian Strobl, Jeffrey West, Sandy Anderson

Issue 171: The letters of the text "This week in MathOnco" provide a chemotactic signal for migrating cells (in white). Cells within basins of high concentration are allowed to proliferate and expand to fill the domain. After some time, the chemotactic signal changes to display "1000" to celebrate 1000 subscribers to the newsletter. Built in HAL, using off-lattice, agent-based grids in combination with PDE grids.