Table 3.

Expression cassette copy number and rPG-1 activity level.

PP-PG-1 clone	rPG-1 antimicrobial activity	Copy #
1	-	2
2	+	6
3	+++	6
4	+++	8
5	++	11
6	+	4

rPG-1 antimicrobial activity level correlates with amount of rPG1 produced. PP-PG-1 clones were assessed for antimicrobial activity against MRSA. (-) indicates no rPG-1 activity was detected and in the others, the activities of rPG-1 are indicated as + (clear zone 0.5–1.5 mm), ++ (clear zone 1.5–2.5 mm), and +++ (clear zone > 2.5 mm).