Results. The 120 specimens from 30 patients underwent bacterial culture growth: 116 were sterile, an 4 aerobic cultures (2 patients) grew coagulase-negatie staphylococci, suggestie of contamination.

• 结果：这来自30个病人的120片碎片在经历了细菌培养程序后发现：116片是无菌的，有4片(来自2个病人)在有氧条件下培养除了凝固酶阴性的葡萄球菌，提示被污染了。