Neisseria species are known to undergo both phase and antigenic variation. Define phase versus antigenic variation and describe how each might occur. What advantage do they provide for a pathogen?...


Neisseria species are known to undergo both phase and antigenic variation. Define phase versus antigenic variation and describe how each might occur. What advantage do they provide for a pathogen?


Some researchers have tried to identify the PAIs in Salmonella by comparing the E. coli K-12 genome with that of S. enterica serovar Typhimurium. What are the advantages and disadvantages of this approach?



May 04, 2022
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