The tumor is classified into four subtypes: embryonal, botryoid, alveolar, and pleomorphic.
其病理
多属于胚胎或
。
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Additionally, the cell wall helps maintain their shape: the round-shaped bacteria are called cocci, the rod-shaped ones are called bacilli, spiral-shaped ones are spirilla, and sometimes the same bacteria can have multiple forms in which case they're called pleomorphic.
此外，
胞壁有助于保持其
状：圆
为球，棒状叫做杆，螺旋是螺旋，有些具有不同态，因此它们被为多。
、颌下
部是较大多形性
