Table 1.

M. pneumoniae strains used in this study (1)

Strain	Relevant cytadherence proteins				Mutation	Ref(s).
	HMW1	HMW2	HMW3	P30
M129 (parent strain)	+++*	+++	+++	+++	None	9
Class I mutants (2, 8 and 10)	+/−†	−‡	+/−	+++	Point mutation tentatively identified in hmw2	6
M6	−	+++	+++	Δ§	Frameshift mutation in hmw1; Δ at 3′ end of p30	10
crl	+/−	−	+/−	+++	Tn4001 insertion in hmw2	7, 8

^*Protein present at wild-type level. 

^†Protein present at greatly reduced level. 

^‡Protein absent. 

^§Partial deletion.