To achieve an ideal effect of vaccination, Escherichia coli counts must be measured in preparing an own vaccine against fowl Escherichia coli.
制备大肠杆菌自家苗时,为了达到理想的免疫效果,必须进行大肠杆菌菌数的测定。
2
Objective:To construct a recombinant plasmid containing rhoptry protein 2(ROP2)gene of Toxoplasma gondii and express it in E. coli for selection of diagnostic antigen and vaccine candidate.
The purified recombinant major outer-membrane protein (MOMP) of Chlamydia psittaci(Cps)expressed in E. coli was mixed with oil adjuvant and manufactured as MOMP-vaccine.