Table 1.

Antigenicity of viral structural proteins.

	Relative proportions of viral proteins and reactivity of antisera (%)
Viral structural proteins	Viral proteins in virion	Total	Convalescent serum	Total	Rabbit anti-virion serum	Total
S trimer (top)	8.8	32.6	9.1		38.3
S multimers (middle)
S multimers (bottom)
S full-length	9.8		9.6	32.6	7.2	53.2
S1 subunit	2.7		20.1		7.5
S2 subunit	11.3		27.8		0.2
N	57.6	57.6	13.6	13.6	26.3	26.3
3a dimer (2 bands)	5.2		3.8		1.5
3a full-length	1.6		6.4		8.9
M+3a cleaved	0.4		4.9		9.1
M′ unglycosylated	2		4.1		0.6
E	0.6		0.6		0.4
Total	100		100		100	79.5