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The Effect of Storage Time on Isolation of Leptospira Interrogans from Bovine Kidneys

Kidney tissues from 20 cattle infected with Leptospira interrogans serovars hardjo, pomona, or grippotyphosa were cultured on the day of slaughter and 3, 6, and 8 days later to examine the effect of storage time on the recovery of leptospires by conventional culture methods. Leptospires were isolated from 85% of infected bovine kidney tissues cultured on day 1, and from 95%, 90%, and 90% of kidney tissues stored in transport medium at 4 C for 3, 6, and 8 days, respectively, prior to inoculation of culture media.