主要组织相容性复合体（MHC）是一群紧密连锁的基因，编码主要组织相容性抗原，在脊椎动物机体的免疫应答中具有重要作用。
The major histocompatibility complex( MHC) is a group of closely-linked gene, Which code the major histocompatibility antigen and play a critical role in immune response in vertebrate animals.
胆碱是维生素B复合体之一，它主要存在于高胆固醇食物中，比如蛋以及动物肝脏中。
Choline is a B complex vitamin that is concentrated in high cholesterol foods like eggs and liver.
叶酸：一种维生素B复合体，为动物代谢所必需，也是细菌所需要的一种生长因子。
Folic acid or folate: Organic compound essential to animal growth and health and needed by bacteria as a growth factor.
主要组织相容性复合体(Major histocompatibility complex,MHC)不仅与移植排斥反应有关，而且还与动物的一些经济性状密切相关。
MHC (Major histocompatibility complex) not only plays a central role in the immune response and immunological recognition but also correlates with some economic traits.
主要组织相容性复合体(Major histocompatibility complex,MHC)不仅与移植排斥反应有关，而且还与动物的一些经济性状密切相关。
MHC (Major histocompatibility complex) not only plays a central role in the immune response and immunological recognition but also correlates with some economic traits.
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