Table 2.

Frequencies of IB band appearances according to the successive sera after seroconversion diagnosis

Sample in which IB bands were present	Band (kDa)	No./total no. (%) of patientsa
		Seroconversion diagnosis on 1st serum	Seroconversion diagnosis on 2nd serum
1st	30	26/26 (100)	7/12 (58.3)
	31	20/26 (77)	2/12 (16.7)
	33	3/26 (11.5)	0/12 (0)
	40	26/26 (100)	2/12 (16.7)
	45	21/26 (80)	1/12 (8.3)
2nd	30		11/11 (100)b
	31		8/11 (72.7)b
	33		2/11 (18.2)b
	40		9/11 (81.8)b
	45		10/11 (90.9)b

^aFor one patient, seroconversion diagnosis was made on the third serum by routine methods: bands at 30 and 31 kDa were present on the first serum and bands at 33 and 40 kDa on the second serum.

^bImmunoblotting was not done for one patient.