The domain that constitutes the peptide-binding cleft of MHC class II molecules is ( ).
A: α1
B: β1
C: α2
D: β2
A: α1
B: β1
C: α2
D: β2
举一反三
- Both<br/>class I and class II MHC molecules are expressed on() A: Erythrocytes B: Neutrophils C: lymphocytes D: Eosinophils E: T<br/>lymphocytes
- MHC class II molecules can present___. A: Endogenous antigens B: Exogenous antigens C: Both A and B D: Neither A nor B
- Which of the following cells constitutively express MHC class II molecules? ( ) A: macrophage B: dendritic cell C: Langerhans cell D: B cell E: thymic epithelial cell
- 已知列表 list1 = [1, 2, 3],那么执行语句[list1.append('ii') for ii in range(1,5,2)]之后,list1的值为________。() A: [1, 2, 3, 'i', 'i'] B: [1, 2, 3, 'ii', 'ii'] C: [1, 2, 3, 1, 3] D: [1, 2, 3, '1', '3']
- Given [img=214x47]18033783c242984.png[/img], then the initia value of the signal in the time domain, [img=44x26]18033783cb70806.png[/img] is ( ) A: 1 B: 1/2 C: 1/4 D: 2