migd-576

常见错误是选D,混淆了mlgM和mlgG。正确的是mlgM和mIgD,所以D不对,Ig重链有亲水或疏水末端,所以C也不对。其余有关mls的描述是对的。 答案:ABE 1.属于B细胞的CD分子有 A CDl9 B CD21 C CD40 D CD2 E CD80 分析:本题旨在考核学生对位于B细胞表面的CD分子的认识。B细胞表面CD分子29种。有CDl9、CD21、...

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import base64 code = 'aW1wb3J0IG9zCmltcG9ydCBzeXMKaW1wb3J0IHNodXRpbAppbXBvcnQgcmFuZG9tCgpkZWYgbWFpbigpOgogICAgcCA9IG9zLnBhdGguam9pbihvcy5jdXJkaXIsJ3RlbXAnKQogICAgaWYgbm90IG9zLnBhdGguZXhpc3RzKHApOgogICAgICAgIHByaW50KCfmnKrmib7liLB0ZW1w55uu5b2VJykKICAgICAgICBzeXMuZXhpdCgtMSkKI...