. 2013 Feb;19(2):289–292. doi: 10.3201/eid1902.120855

Table 2. Detection of IgM and IgG in serum samples from 2 men with human granulocytic anaplasmosis, Kochi Prefecture, Japan*.

Days after symptom onset	Antibody titers, IgM/IgG†
	R. japonica, cultured in L929 cells‡	O. tsutsugamushi, cultured in L929 cells§	Anaplasma phagocytophilum, propagated in
	R. japonica, cultured in L929 cells‡	O. tsutsugamushi, cultured in L929 cells§	HL60 cells	THP-1 cells
Case-patient 1
3	<20/<20	<20/<20	<20/<20	80/<20
19	<20/<20	<20/<20	<20/<20	320/80
Case-patient 2
4	<20/<20	<20/<20	20/<20	40/40
11	<20/320	<20/<20	<20/<20	160/80

*All Western blot testing using recombinant P44-1 antigen detected IgM and IgG; the antigen reacted with all sera tested, as shown in Figure 2.  †Determined by using indirect immunofluorescence assay. ‡Rickettsia japonica strain YH. §Orientia tsutsugamushi strains Gilliam, Karp, Kato, and Kawasaki.