Table 5.

Major serovar-identifying peaks used for MALDI-TOF screening of the top 5 serovars and results of selectivity validation^a

Parameter	Enteritidis	Typhimurium	Virchow	Infantis	Hadar
Antigenic formula	1,9,12:g,m:-	1,4,[5],12:i:1,2/1,4,[5],12:i:-	6,7,14:r:1,2	6,7,14:r:1,5	6,8:z10:e,n,x
Selectivity (%)	99.3	100	100	100	99.1
Exclusivity (%)	100	100	100	100	100
Inclusivity (%)	86.5	100	100	100	85.7
m/z
Putative uncharacterized protein	6,036	6,009	6,008	6,009	6,009
Protein Gns	6,484	6,484	6,484	6,512	6,484
Uncharacterized protein YhfG	6,771	6,799	6,799	6,718	6,771
Putative uncharacterized protein YaiA	7,111	7,097	7,097	7,111	7,111
Putative inner membrane protein STM0348	8,686	8,686	8,699	8,699	8,699
NAa	9,390	9,404	9,404	9,374	9,404
Ribosomal protein RS15	10,067	10,067	10,048	10,067	10,067
Uncharacterized protein YbgS	10,958	10,958	10,958	10,958	10,927
Putative inner membrane protein YgaM	11,857	11,848	11,848	11,857	11,848
Ribosomal protein RS7	17,474	17,461	17,461	17,461	17,461
Putative uncharacterized protein YciF	18,644	18,655	18,655	18,635	18,654
Superoxide dismutase SodM (Mn)	23,012	22,949	22,979	22,979	22,979

^aHighly specific biomarker combinations are indicated in boldface.