In a process for preparing disinfected preparations from mammalian tissues, mammalian tissue is perfused at one step with an enzyme-free liquid antibiotic composition that includes at least one antibiotic and is contained in at least one perfusion buffer. In a step occurring after such one step, enzymatic antibiotic-free treatment of the tissue is carried out to obtain a single-cell suspension. In another step disinfected preparations are obtained.본 발명은 소독된 단세포 제조물을 포유동물 조직으로부터 제조하는 방법 및 그에 따라 제조된 제조물에 관한 것이다.