Any of various gram - negative, rod - shaped, often pathogenic bacteria of the genus Streptobacillus, occurring in chains, especially S.moniliformis, which causes a type of rat - bite fever.

• 链杆菌一种革兰氏阴性的杆状，经常为单性生殖细菌链杆菌属，呈链形，尤指引起一种鼠咬热的念珠形链杆菌