Table 1.

Morphological changes induced on Caco-2 cells by C. perfringens strains.

Strain	Time (h)	Cytotoxicity*
CN3685	1.5	−
	2	+
	2.5	++
	3	+++
CPJV47	1.5	−
	2	−
	2.5	+
	3	+
CPJV47(pJVRS3)	1.5	−
	2	+
	2.5	++
	3	+++
JGS1495	1.5	−
	2	−
	2.5	−
	3	−
	3.5	+
	4	++
	5	+++
CN5383	1.5	−
	2	−
	2.5	−
	3	−
	3.5	+
	4	++
	5	+++

^*(+) >80% of Caco-2 cells were swollen, (++) <50% of Caco-2 cells were swollen and <50% of cells were rounded and (+++) >80% of Caco-2 cells were rounded and detached from the glass.