blind passage


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blind passage

[′blīnd ′pas·ij]
(microbiology)
Transfer of some material from an inoculated animal or cell culture that does not exhibit evidence of infection, to a fresh animal or cell culture.
References in periodicals archive ?
After 1 blind passage, cytopathic effects were clearly visible in [approximately equal to] 80% of the cells.
Two cultures (ArEq001 and ArEq003) showed CPEs on day 7 postinoculation of the original isolation; in the third culture (ArEq002), CPEs were observed only after the blind passage on day 7 after inoculation.
One additional blind passage was performed if CPE was not observed during the first passage.