Cancers are described as more or less malignant in proportion as they are more or less rapidly growing and invasive. 癌生长的快慢和侵袭性的大小与它的恶性程度成正比。
These nonmalignant cells, such as stromal fibroblasts and bone marrow-derived cells, have been shown to be capable of promoting tumor growth and metastasis. 这些非恶性细胞如基质成纤维细胞和骨髓源性细胞已被证明能够促进肿瘤的生长和转移。
