Screening and characterization of a non-insecticidal Bacillus thuringiensis strain producing parasporal protein with selective toxicity against human colon cancer cell lines

Table 1 Frequency of Bacillus thuringiensis distribution among the soil samples collected at Mandapam, Tamil Nadu, India

Soil sampling site	No. of soil samples tested per site	No. of samples with B .thuringiensis	No. of spore-formers obtained	No. of non-clonal B. thuringiensis strains
Thittakudi street	4	3	115	8
Sethukarai	4	4	120	9
Kunthukal	4	4	140	10
Vembar beach	5	5	210	21
Pamban Bridge	4	4	200	17
	Total = 21	Total = 20	Total = 785	Total = 65 (8.28 %)

ISSN: 1869-2044