【多选题】关于丝裂原正确的描述是
C.
作用于人类T细胞的丝裂原有SPA、ConA、PWM
D.
作用于人类B细胞的丝裂原有LPS、SPA、PWM
【判断题】丝裂原作用于人类B细胞的丝裂原有LPS、PHA、PWM
【单选题】下列哪项是指社区中的人们对卫生保健体系和健康信息的知情度()
【单选题】Which type of bond is most likely to be preferred by investors in a falling interest rate environment?
A.
A floored floating-rate note
B.
A capped floating-rate note
C.
A floating-rate note with no cap or floor
【单选题】Which bond is destroyed by nucleases?
A.
3’,5’-phosphate-diester bond