Medical Definition of HOMEODOMAIN. : a domain in a protein that is encoded for by a homeobox, that consists of about 60 amino acid residues which are usually similar from one such domain to another, and that recognizes and binds to specific DNA sequences in genes regulated by the homeotic gene.weet. : a domain in a protein that is encoded for by a homeobox, that consists of about 60 amino acid residues which are usually similar from one such domain to another, and that recognizes and binds to specific DNA sequences in genes regulated by the homeotic gene.
Definition. Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of staph bacteria that's become resistant to many of the antibiotics used to treat ordinary staph infections.efinition. Methicillin-resistant Staphylococcus aureus (MRSA) infection is caused by a type of staph bacteria that's become resistant to many of the antibiotics used to treat ordinary staph infections.
MRSA is a type of bacterium that can resist the effects of many common antibiotics. This ability makes MRSA infections much more difficult to treat. MRSA first surfaced in hospitals, where it often caused serious bloodstream infections in people who were sick with other diseases and conditions.