| 释义 |
constant regionn.（名词）- The portion of the carboxyl terminal of an immunoglobulin's heavy and light chains having an amino acid sequence that does not vary within a given class or subclass of immunoglobulin.恒定区：免疫球蛋白重链和轻链的羧酸末端部分，免疫球蛋白重链和轻链具有在确定的免疫球蛋白类或亚类中不变的胺基酸序列
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