溃疡是圆形或不规则形的凹陷，全层表皮及部分真皮缺失。
Ulcers are rounded or irregularly shaped excavations that result from complete loss of the epidermis plus some portion of the dermis.
大疱为圆形或不规则形的大水疱，含浆液性浆液脓性液体，大于1cm，与水疱仅是大小之别。
Bullae are rounded or irregularly shaped blisters containing serous or seropurulent fluid. They differ from vesicles only in size, being larger than 1 cm.
线粒体逐渐增多，叶绿体的形状由规则的纺锤形逐渐变为不规则的圆形或椭圆形。
The shape of chloroplasts changed from regular spindle-shaped to irregular rotundity and oval.
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