Objective To explore the gene changes of the mumps vaccine S79 strain during the successive 12 passages,and compare the sequence among the three viruses:S79 master seed virus(S79-1-3),S79 plaque-purified strain(S79-1-P7-3③)and ME (Enders) strain, a mumps virus strain cultivated in chicken embryonic allantoic fluid,in the laboratory.

Isolation of strains that can transform linoleic acid to conjugated linoleic acid;

Selection of the superior strains for fixed organic fertilizer;

Isolation and identification of bacterial strains for surfactant degradation;

Study on breeding of efficient decolorizing bacterial strains for coking wastewater and optimal decolorization condition thereof

A total of 10 bacterial strains represented as from SB01 to SB10 were isolated from a petrolium-contaminated sludge,and their potential of degrading pyrene(PYR)was investigated on the substrates pyrene(MS1),pyrene plus glucose(MS2),and pyrene plus phenanthrene(MS3).

Screening of mixed oil-degrading bacterium and their biodegrodation charateristics;

Breeding of a fast retting bacterium and appraisal of retting function in hemp;

1,3-propanediol high production bacterium ultraviolet mutant;