Table 3.

Cytotoxic activity of A. hydrophila, A. caviae and A. veronii biotype sobria cell-free supernatants to HEp-2 cells

Cytotoxic titre rangea	Aeromonas species (% per pecies)	Strain no.
64–128	A.veronii biotype sobria (71)	MPU A387, 525, 526, 528, 533, 524, 527, 529, 530, 532, 552, 553
	A. caviae (30)	MPU A500, 506, 508, 515, 501-505, 507, 509, 511, 512
	A. hydrophila (25)	MPU A540
1–32	A. veronii biotype sobria (29)	MPU A382, 391, 392, 389, 551
		MPU A388, 393, 384, 390, 517, 521-523,546-550, 375, 376, 378, 379, 383, 385, 545, 377, 380, 519, 544, 514, 510, 516,
	A. caviae (63)
	A. hydrophila (75)	MPU A541, 542, 543
0	A. caviae (7)	MPU A386, 518, 520

^aThe reciprocal of the highest dilution yielding rounding, detachment and destruction of 50% of HEp-2 cells at 24 h after infection