HLA-A、HLA-B和HLA-C编码一类抗原的重链，而轻链则由下列哪种编码

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24539' and id < 2107972 and id<>'2107972' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24539' and id > 2107972 and id<>'2107972' order by id asc limit 5