Variables of state for each agent (for example the variables of the tip vessel state are VEGF, Doubling Age and Number of Capillary Cells).

Variables of state for each agent (for example the variables of the tip vessel state are VEGF, Doubling Age and Number of Capillary Cells).各智能体（Agent）的状态变量（例如尖端血管（tip vessel）的状态变量包含血管内皮生长因子（VEGF）、倍增年龄（Doubling Age）以及毛细血管细胞数量（Number of Capillary Cells））。