Abstract
One hundred of bacterial isolates as a CoNs represented by 53% S. haemolyticus , 26% S. epidermidis and 21% S. hominis. the results showed that only 93% of isolates were phenotypically biofilm formation in christensen tube and TS-Congo red agar methods , PCR technique revealed that 93% of CoNS isolates carried aap gene and 08% of isolates were expressed icaA and icaD genes |