The tumor is classified into four subtypes: embryonal, botryoid, alveolar, and pleomorphic.
其病理
多属于胚
肺泡。
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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.
，
胞壁有助于保持其形状：圆形的
称为球，棒状的叫做杆，
形的是，有些具有不同的形态，因它们被称为多形。
是较大多形性腺瘤的
