TABLE 1.

Classification of anti-P MAbs by cELISA^a

Unlabeled MAb	% Inhibition of biotin-labeled MAbs							Site
	M953	M957	M974	M960	M962	M965	M971
M953	99	91	98	29	70	63	7	I
M954	94	75	83	22	47	38	9
M955	59	50	30	13	26	25	0
M956	99	91	99	7	49	48	0
M957	99	93	99	10	47	44	0
M973	99	96	99	29	66	58	12
M974	97	84	94	29	54	50	16
M975	99	92	99	2	42	31	0
M958	20	11	11	70	17	23	4	II
M960	20	21	7	70	16	17	0
M961	17	14	10	67	16	24	2
M966	20	2	7	55	19	21	0
M976	25	6	11	64	19	24	13
M977	20	13	14	67	20	13	13
M951	24	17	10	0	54	59	0	III
M959	45	35	12	0	99	99	0
M962	41	27	22	4	99	99	0
M964	52	27	24	6	98	99	0
M965	43	27	18	0	98	99	0
M967	45	28	17	7	99	99	0
M970	42	20	11	0	98	99	0
M972	54	28	21	22	99	99	7
M963	16	0	9	24	21	21	98	IV
M968	27	11	5	15	21	26	97
M969	5	1	0	12	25	22	98
M971	24	0	12	15	21	15	96
M978	11	0	7	0	16	24	88

^aEach value represents the percent inhibition of the biotin-labeled MAb by the unlabeled MAb. Boxed areas enclose those MAbs recognizing a single antigenic site.