TABLE 3.

Relative HA and HMW2 levels of M. pneumoniae transformants

Strain	% of wild-type HAa	Relative level of HMW2b
Mutant I-2	4.4	−
I-2/HMW2-1	44.2	+
I-2/HMW2-2	17.4	+
I-2/HMW2-3	42.6	++
I-2/P65-HMW2-2	63.3	+++
I-2/P65-HMW2-3	56.0	+++

^aTotal counts per minute added varied due to differences in the growth rates of some transformants but ranged from 7 × 10³ to 3 × 10⁴ in most experiments. Background radioactivity varied proportionally (typically from 1 × 10² to 5 × 10² cpm). 

^bAs indicated in Table 1.