【单选题】【消耗次数：1】
关于HBV叙述错误的是
①
为乙型肝炎的病原体
②
为一直径42nm的球形颗粒
③
外层为一厚约7mm的包膜，称为乙型肝炎表面抗原
④
内层的抗原称为乙型肝炎核心抗原和乙型肝炎e抗原
⑤
主要由肠道传播
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①
抗-HBe是保护性抗体，能有效清除病毒
②
HbsAg阳性即为急、慢性乙肝
③
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