Comparison of plasmid DNA extracted from <i>Bacillus</i> sp. strain HS24 and <i>B. subtilis</i> 168 transformed with the tetracycline resistance plasmid pBHS24 and the erythromycin resistance plasmid pBHS24B.

<p>Lane 1, DNA marker; Lane 2, <i>Bacillus</i> sp. HS24; Lane 3, <i>B. subtilis</i> 168 - pBHS24; Lane 4, <i>B. subtilis</i> 168 - pBHS24B; Multiple faint bands on lanes 2 to 4 correspond to the different conformational forms of plasmid DNA.