Witte W
Zentralbl Bakteriol Orig A. 1975 Dec;233(4):447-51.
In Staph. aureus strains isolated from human pathological material the frequency of strains which did not react with typing phages (NT-strains) was found to be about 30%. In one half of the NT strains the reaction with typing phages is prevented by a capsule. The capacity for capsule-formation is lost after propagation of the cells in a liquid glycerol-minimal-medium; thus the cells become typable by phages. The capacity for capsule-formation can be restored after intraperitoneal injection into mice. A new propagation in glycerol-minimal-medium leads again to a loss of the capsule.
在从人类病理材料中分离出的金黄色葡萄球菌菌株中，发现不与分型噬菌体发生反应的菌株（NT菌株）的频率约为30%。在一半的NT菌株中，与分型噬菌体的反应被荚膜所阻止。细胞在液体甘油-基本培养基中传代后，形成荚膜的能力丧失；因此，细胞可被噬菌体分型。将细胞腹腔注射到小鼠体内后，形成荚膜的能力可以恢复。在甘油-基本培养基中再次传代又会导致荚膜丧失。
