The friability explains how portions of the vegetation can break off and embolize 由于赘生物的易碎，因此极易脱落和引起栓塞。
2.
Here is another marantic vegetation on the leftmost cusp . these vegetations are rarely over 0 . 5 cm in size . however , they are very prone to embolize 最左方尖端的消耗性赘生物，大小虽然很少超过0 . 5厘米，但是非常容易形成栓塞。
