Expression patterns of <i>pspA</i> reporter fusions.

Abstract

<p>The <i>pspA</i> promoter region −990 to −122 (pspA:lacZ), and versions of the same region containing a mutation of either the W (pspA-M1:lacZ) or S (pspA-M456:lacZ) sites. Expression patterns were established in standing slugs stained with X-gal.</p