Both of these proteins, are tumor suppressors, meaning they help slow down cell growth and prevent tumors.

这些蛋白都是抑制剂，辅助抑制细胞生长，阻止生。

So oncogenes or mutated tumor suppressor genes allow cells to keep growing uncontrollably resulting into tumors.

因，癌基因或抑癌基因使细胞不受控制地增长，导致生。

Thus, tumors of mature muscle or nerve cells do not occur, although tumors of less differentiated myoblastic or neuronal stem cells do.

因，尽管有生在分化程度较低成肌细胞或神经干细胞，但不会生成熟肌肉或神经细胞。