Impact of freeze drying on drug resistance pattern of few Escherichia coli strains.
Drug resistant strains of E. coli were freeze dried for long term preservation. Certain drug resistance markers were maintained after freeze drying while others were not. Streptomycin and sulphonamide resistance markers resisted freeze drying. Ampicillin, cephelaxin and neomycin resistances developed very frequently and except gentamicin all the markers were lost in varying percentage after freeze drying.
Tripathi
C K
CK
Sur
B
B
Govind
A
A
Basu
S K
SK
D004352:Drug Resistance, Microbial; D004926:Escherichia coli; D005612:Freeze Drying