英语语法分析

The growth of tumor must experience a process of angiopoietic , whether COX - 2 influence the biological behaviour of tumor by angiogenesis is still unclear.

目前认为肿瘤的生长须经历一个血管形成的过程，而COX-2是否通过影响肿瘤血管形成来影响肿瘤的生物学行为尚不清楚。