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.
1 When MRSA bacteria are found on the skin but do not cause illness it is called colonization.. 2  In most cases, MRSA does not cause any problems or causes minor infections, such as pimples or boils. 3  In some cases, MRSA can cause more serious infections.irborne Diseases. Airborne diseases are caused by pathogenic microbes small enough to be discharged from an infected person via coughing, sneezing, laughing and close personal contact or aerosolization of the microbe.