TABLE 3.

Comparative results obtained by IHA with red blood cells sensitized with cytoplasmic and membrane antigens, CMA-ELISA, and IRA-ELISA

Patient no.	Age (yr)	Antibody reduction
		IHAa	IRA-ELISA		CMA-ELISA
			Best indicator antigen	Mo of neg. resultb	Best dilution	Mo of neg. result
1	25	Yes	13	6	None	Anyc
3	27	Yes	13	12	1/320	6
4	20	No	13	30	1/320	30
5	41	No	13	30	1/320	24
9	23	Yes	SAPA	54	1/160	12
10	23	No	SAPA	30	1/320	18
11	26	No	13	6	None	None
15	20	Yes	SAPA, 13, 36	36	1/320	6
18	21	No	36	42	1/80	24
2	19	Yes	Response only to 2 and 30		1/320	18
6	22	Yes	13	Began to descend	1/320	6
7	35	Yes	Any	Any	None	None
8	22	No	Any	Any	1/320	12
12	23	No	36	Began to descend	1/80	18
13	21	Yes	Any	Any	1/320	30
14	29	No	Any	Any	1/320	6
16	21	Yes	Any	Any	1/320	12
17	38	No	Any	Any	None	None

^aThe results indicate whether a regression of more than two titers between the pretreatment and the posttreatment evaluations occurred.

^bMo of neg. result, month in which a patient became negative by any given test.

^cAny, positivity for all of the recombinant antigens.