长期应用于衣原体血清学诊断的是()
A.O-多糖
B.核心多糖
C.细胞壁LPS
D.种特异性抗原
E.型特异性抗原
参考答案:C
解析:
长期应用于衣原体血清学诊断的是细胞壁LPS。
男,57岁。上腹隐痛,食欲缺乏,体重减轻4个月,排黑便3次。查体:腹部无阳性体征。
诊断首先考虑为()
A.慢性胃炎
B.十二指肠溃疡
C.胃溃疡
D.胃癌
E.胃憩室
Which characteristic is an advantage of Halon as a fire extinguishing medium?()
A.Electrically non-conductive
B.Relatively inexpensive
C.Effective against chemicals containing an oxidizer
D.All of the above