Fuente: WIPO "biotechnology" The present invention relates to a use of bacteriophage or lytic protein derived from the bacteriophage effective in the treatment of biofilm formed by Staphylococcus aureus. More precisely, the present invention relates to a composition for the removal of biofilm formed by Staphylococcus aureus containing the bacteriophage having a genome represented by the nucleotide sequence selected from the group consisting of the sequences represented by SEQ. ID. NO: 1 NO: 26 the lytic protein having the amino acid sequence represented by SEQ. ID. NO: 28 derived from the bacteriophage the bacteriophage having the nucleotide sequencerepresented by SEQ. ID. NO: 29 or the lytic protein having the amino acid sequence represented by SEQ. ID. NO: 31 derived from the bacteriophage.