The biochemical characters and antigenic structure of the latter, however, did not change.

但生化特性和抗原结构仍无改变。

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Some non-NPC neoplasms being demonstrated BAE-5 positivity may be due to the presence of EBV EA-R antigenic epitope or polypeptides simulating the structure of EA-R.

一些非鼻咽癌肿瘤能与BAE-5起阳性反应，可能是由于这些肿瘤细胞中也有EB病毒早期抗原存在或者可能存在与EA-R 抗原决定簇相类似结构的多肽而引起交叉反应。

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