FIG. 2.

Patterns of asgE expression during growth and development. Expression was monitored using the asgE::lacZ reporter gene fusion Ω5003 in strain MS2021. Mean β-galactosidase-specific activities (defined as nanomoles of ONP produced minute⁻¹ milligram of protein⁻¹) were determined from three independent experiments. Error bars represent the standard deviations of the mean. Black squares represent β-galactosidase-specific activity, while empty squares represent cell density. Expression of asgE during development on TPM starvation agar (A) and growth in CTT nutrient broth (B) is shown.