一、细菌的试管内敏感度能被血清或血浆羧苄青霉素浓度为100微克/毫升所抑制的细菌属于对羧苄青霉素敏感菌株。根据这一标准,大多数致病性革兰氏阳性或革兰氏阴性球菌(肠球菌除外)对羧苄青霉素十分敏感(表1)。细菌可产生对羧苄青霉素耐药的菌株, First, the in vitro susceptibility of bacteria can be inhibited by serum or plasma carbenicillin concentration of 100 micrograms / ml bacteria belong to carbenicillin sensitive strains. According to this standard, most pathogenic Gram-positive or Gram-negative cocci (except enterococci) are very sensitive to carbenicillin (Table 1). Bacteria can produce strains resistant to carbenicillin,