TABLE 1.

Molecular masses of camelid IgGs estimated by migration in SDS-PAGE^a

Animal	Molecular mass (kDa)
	IgG1c		IgG2			IgG3
	Hc	Lc	a	b	c
Llama	49.4	22.7	47.2	44.1	40.9	42.1
Alpaca	49.9	22.5		43.3	40.9	42.1
Guanaco	50.8	22.7		43.3	40.5	42.1b
Camel	51.4	23.2		42.9b		39.0b

^aPerformed with 10% acrylamide and 15-cm-wide gels.

^bCalculated from Western blots of sera resolved under similar conditions.

^cHC, heavy chain; LC, light chain.