Table 2.

Isolation of bacteriophages against nocardioforms form various sampling point using plaque assay method.

Sample sites	Different points of sampling	Nocardia rhodochrous	Nocardia amarae	Nocardia pinensis (Skermania piniformis)
ETP	AT	−	+b	−
	AS	−	+++b	−
	SC	−	−	−
Dairy industry	AT	−	−	+++c
	AS	+++a	−	−
	SC	−	−	+c

AT: aeration tank, AS: activated sludge, SC: secondary clarifier, − no visual growth; + appearance of visual growth; +++ excellent visual growth.

^aNOC1.

^bNOC2.

^cNOC3.