不受限制的生長（不死，由於有大量端粒酶，細胞不受到細胞凋亡機制的調控）除了切除原發性腫瘤之外，癌症的病程分期（英语：staging）也需要手術的協助。例如，確定腫瘤惡化的程度與是否發生淋巴結轉移。病程分期主要可用來推測預後和是否需要實行輔助治�

Automatically help save your shoppers and items so they’re out there another time you happen to be creating an invoiceYou may in the beginning get started out applying an easy excel or word invoice template, but when you get to creating your second or 3rd small business invoice you may understand that you're squandering plenty of your time on rep