TABLE 1.

MAbs used in experiments

MAb	Isotype	Specificity	Protective efficacy (%) in vivo
			Neonatesa	Adultsb
9D4	IgG1	Tyvelose	78	54
18H	IgG2a	Tyvelose	18	85
9E	IgG2c	Tyvelose	88	62
16H	IgG1	?Peptidec	9	0
18B	IgG1	?Peptidec	8	NT

^aAppleton et al. (1). 

^bBell et al. (3). NT, not tested. 

^c16H and 18B bind to epitopes on a subpopulation of tyvelose-bearing glycoproteins. The epitope has not been defined but is not a glycan (11).