等位基因变异 meaning in Chinese

allelic variation

Now , it has been shown that mbl deficiency and low levels of serum mbl are strongly associated with the presence of three variant alleles b , c , d in mbl structural gene , which codons 54 , 57 and 52 amino acid of mbl polypeptide respectively
现已证实， mbl血清浓度低下主要与其结构基因第一外显子的b 、 c和d等位基因变异体(分别编码54 、 57和52位氨基酸)有关，而正常的mbl等位基因为a 。