将PBMC悬液倾于玻璃培养瓶中,37℃静置1小时,非粘附细胞主要是()
A.T细胞
B.单核细胞
C.淋巴细胞
D.PBMC中混入的杂质细胞
E.B细胞
参考答案:C
— They say Tom's brother is a billionaire.
— ________? He wouldn't accept any help from his brother, even though it was offered. [ ]
A. What if
B. What for
C. So what
D. Forget it
地西泮化学结构中的母核为()
A.1,4-苯并二氮环
B.1,5-苯并二氮环
C.二苯并氮杂环
D.苯并硫氮杂环
E.1,4-二氮杂环