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Medical Term:

filamentous bacterial viruses


Definition: deoxyribonucleoproteins that “infect” and replicate in gram-negative bacteria having sex pili and that, unlike bacteriophage, are released from infected bacteria without damage to the cell; they seem to be of two kinds, one of which has a specificity for F pili and the other for I pili.

Synonym(s): fibrous bacterial viruses