兔双歧杆菌超微结构的观察

OBSERVATION ON THE ULTRASTRUCTURE OF BIFIDOBACTERIUM CUNICULI

本文观察了兔双歧杆菌（Ｂｉｆｉｄｏｂａｃｔｅｒｉｕｍｃｕｎｉｃｕｌｉ）的超微结构，发现青壮龄免双歧杆菌的菌体结构完整，从外向里为糖被、细胞壁、细胞膜和细胞质。细胞壁为双层结构即外界膜和内界膜。胞质中有糖原颗粒、核蛋白体、中介体、液胞或空泡。未见有分叉杆菌。老龄菌无糖被，细胞壁不完整，呈碎片状，可见到许多分叉杆菌。提示兔双歧杆菌分叉的形成与营养不良、环境不利及老龄有关。

By using electron-microscopy observation on the ultrastructure of B. cuniculi were studied. The structure of Bifidobacterium which is glycolalyx, cell wall, cell membrane and cytoplasm, from outer to inter is integtrated in young rabbit. The cell wall were composed of two compact electron strata and one lucidum electron stracts. There are high electron density (glycoyen, ribosomes, mesosomes, vacuole) in the cytoplasm. And no branching Bacillus was found. However there are lots of branching Bacillus in the old Bifidobacterium which there are not glycocalyx and complete cell wall made of pieces. The ultrastructure elucidated by electron-microscopy helps us to reveal the form of the branch o f B. cuniculi concerning undernourishment and bad environment.