Astrocytoma is the most common type among primary tumors in central nervous system with rapid growth, high mortality and poor prognosis, and it comprise 45% of all human brain tumors.

星形细胞瘤是来源于星形细胞或星形前体细胞的中枢神经系统肿瘤，约占所有颅内原发性肿瘤的45%。

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The most common primary tumors of the human brain are thought to be of glial cell origin.

脑原发肿瘤一般都被认为是胶质细胞起源的。

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This fall Dirks and six scientists at the University of Toronto proved the existence of the cells in human brain tumors, pinpointing a small group of cells believed to be the driver of the tumors' growth.

FORBES: Cancer Killer

In the 1980s researchers found high levels of EGF receptors in human tumors of the brain, lung, breast, bladder and pancreas.

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