DNA-Plasmid Extraction Of Salmonella Isolated From Raw Milk

Abstract

Twenty five Isolates of Salmonella were isolated from raw milk
samples which were collected from Abu-Graib village to study the
relationship between their resistance to antibiotics and their plasmids
contents .
Antibiotic sensitivity test for different antibiotics revealed that most
Salmonella isolates were resistant to two antibiotics .
The extraction of the DNA-plasmid revealed that most Salmonella
isolates which resistant to two antibiotics or more were contained large,
individual plasmids size of (55-75)Kilo Base (KB) while the others
isolates were free from such plasmid